diff --git a/actionview/CHANGELOG.md b/actionview/CHANGELOG.md
index 552a902349a09fea24c848a74e192eecb4727921..3fc2ab178c7cf8a78756ec55b7d3129610ea5b2f 100644
--- a/actionview/CHANGELOG.md
+++ b/actionview/CHANGELOG.md
@@ -1,9 +1,3 @@
-*   Add I18n support for input/textarea placeholder text.
-
-    Placeholder I18n follows the same convention as `label` I18n.
-
-    *Alex Robbin*
-
 *   Fix that render layout: 'messages/layout' should also be added to the dependency tracker tree.
 
     *DHH*
diff --git a/actionview/lib/action_view/helpers/tags/placeholderable.rb b/actionview/lib/action_view/helpers/tags/placeholderable.rb
deleted file mode 100644
index 313aa725c9ec233873847cb3f63a0de19a955e1a..0000000000000000000000000000000000000000
--- a/actionview/lib/action_view/helpers/tags/placeholderable.rb
+++ /dev/null
@@ -1,32 +0,0 @@
-module ActionView
-  module Helpers
-    module Tags # :nodoc:
-      module Placeholderable # :nodoc:
-        def initialize(*)
-          super
-
-          if tag_value = @options[:placeholder]
-            object_name = @object_name.gsub(/\[(.*)_attributes\]\[\d+\]/, '.\1')
-            method_and_value = tag_value.is_a?(TrueClass) ? @method_name : "#{@method_name}.#{tag_value}"
-
-            if object.respond_to?(:to_model)
-              key = object.class.model_name.i18n_key
-              i18n_default = ["#{key}.#{method_and_value}".to_sym, ""]
-            end
-
-            i18n_default ||= ""
-            placeholder = I18n.t("#{object_name}.#{method_and_value}", :default => i18n_default, :scope => "helpers.placeholder").presence
-
-            placeholder ||= if object && object.class.respond_to?(:human_attribute_name)
-                          object.class.human_attribute_name(method_and_value)
-                        end
-
-            placeholder ||= @method_name.humanize
-
-            @options[:placeholder] = placeholder
-          end
-        end
-      end
-    end
-  end
-end
diff --git a/actionview/lib/action_view/helpers/tags/text_area.rb b/actionview/lib/action_view/helpers/tags/text_area.rb
index 69038c1498adb1fb336c48a10fe549a3cb376313..9ee83ee7c27d9ef5a975494e20f5b07ac031558b 100644
--- a/actionview/lib/action_view/helpers/tags/text_area.rb
+++ b/actionview/lib/action_view/helpers/tags/text_area.rb
@@ -1,11 +1,7 @@
-require 'action_view/helpers/tags/placeholderable'
-
 module ActionView
   module Helpers
     module Tags # :nodoc:
       class TextArea < Base # :nodoc:
-        include Placeholderable
-
         def render
           options = @options.stringify_keys
           add_default_name_and_id(options)
diff --git a/actionview/lib/action_view/helpers/tags/text_field.rb b/actionview/lib/action_view/helpers/tags/text_field.rb
index 5c576a20cad06faae7e9b0354c947a46ca7732a7..e0b80d81c2c0a9270b87f90feec285ea36751209 100644
--- a/actionview/lib/action_view/helpers/tags/text_field.rb
+++ b/actionview/lib/action_view/helpers/tags/text_field.rb
@@ -1,11 +1,7 @@
-require 'action_view/helpers/tags/placeholderable'
-
 module ActionView
   module Helpers
     module Tags # :nodoc:
       class TextField < Base # :nodoc:
-        include Placeholderable
-
         def render
           options = @options.stringify_keys
           options["size"] = options["maxlength"] unless options.key?("size")
diff --git a/actionview/test/template/form_helper_test.rb b/actionview/test/template/form_helper_test.rb
index d944214961c6b49332e5c0926351a78b6dad7fbb..a9f137aec68d82878d71d123515b46b86966fe77 100644
--- a/actionview/test/template/form_helper_test.rb
+++ b/actionview/test/template/form_helper_test.rb
@@ -59,35 +59,6 @@ def form_for(*)
       }
     }
 
-    I18n.backend.store_translations 'placeholder', {
-      activemodel: {
-        attributes: {
-          post: {
-            cost: "Total cost"
-          },
-          :"post/cost" => {
-            uk: "Pounds"
-          }
-        }
-      },
-      helpers: {
-        placeholder: {
-          post: {
-            title: "What is this about?",
-            written_on: {
-              spanish: "Escrito en"
-            },
-            comments: {
-              body: "Write body here"
-            }
-          },
-          tag: {
-            value: "Tag"
-          }
-        }
-      }
-    }
-
     @post = Post.new
     @comment = Comment.new
     def @post.errors()
@@ -326,68 +297,6 @@ def test_label_with_block_in_erb
     )
   end
 
-  def test_text_field_placeholder_without_locales
-    with_locale :placeholder do
-      assert_dom_equal('<input id="post_body" name="post[body]" placeholder="Body" type="text" value="Back to the hill and over it again!" />', text_field(:post, :body, placeholder: true))
-    end
-  end
-
-  def test_text_field_placeholder_with_locales
-    with_locale :placeholder do
-      assert_dom_equal('<input id="post_title" name="post[title]" placeholder="What is this about?" type="text" value="Hello World" />', text_field(:post, :title, placeholder: true))
-    end
-  end
-
-  def test_text_field_placeholder_with_human_attribute_name
-    with_locale :placeholder do
-      assert_dom_equal('<input id="post_cost" name="post[cost]" placeholder="Total cost" type="text" />', text_field(:post, :cost, placeholder: true))
-    end
-  end
-
-  def test_text_field_placeholder_with_human_attribute_name_and_value
-    with_locale :placeholder do
-      assert_dom_equal('<input id="post_cost" name="post[cost]" placeholder="Pounds" type="text" />', text_field(:post, :cost, placeholder: "uk"))
-    end
-  end
-
-  def test_text_field_placeholder_with_locales_and_value
-    with_locale :placeholder do
-      assert_dom_equal('<input id="post_written_on" name="post[written_on]" placeholder="Escrito en" type="text" value="2004-06-15" />', text_field(:post, :written_on, placeholder: "spanish"))
-    end
-  end
-
-  def test_text_field_placeholder_with_locales_and_nested_attributes
-    with_locale :placeholder do
-      form_for(@post, html: { id: 'create-post' }) do |f|
-        f.fields_for(:comments) do |cf|
-          concat cf.text_field(:body, placeholder: true)
-        end
-      end
-
-      expected = whole_form("/posts/123", "create-post", "edit_post", method: "patch") do
-        '<input id="post_comments_attributes_0_body" name="post[comments_attributes][0][body]" placeholder="Write body here" type="text" />'
-      end
-
-      assert_dom_equal expected, output_buffer
-    end
-  end
-
-  def test_text_field_placeholder_with_locales_fallback_and_nested_attributes
-    with_locale :placeholder do
-      form_for(@post, html: { id: 'create-post' }) do |f|
-        f.fields_for(:tags) do |cf|
-          concat cf.text_field(:value, placeholder: true)
-        end
-      end
-
-      expected = whole_form("/posts/123", "create-post", "edit_post", method: "patch") do
-        '<input id="post_tags_attributes_0_value" name="post[tags_attributes][0][value]" placeholder="Tag" type="text" value="new tag" />'
-      end
-
-      assert_dom_equal expected, output_buffer
-    end
-  end
-
   def test_text_field
     assert_dom_equal(
       '<input id="post_title" name="post[title]" type="text" value="Hello World" />',
@@ -756,83 +665,6 @@ def test_radio_button_with_booleans
     )
   end
 
-  def test_text_area_placeholder_without_locales
-    with_locale :placeholder do
-      assert_dom_equal(
-        %{<textarea id="post_body" name="post[body]" placeholder="Body">\nBack to the hill and over it again!</textarea>},
-        text_area(:post, :body, placeholder: true)
-      )
-    end
-  end
-
-  def test_text_area_placeholder_with_locales
-    with_locale :placeholder do
-      assert_dom_equal(
-        %{<textarea id="post_title" name="post[title]" placeholder="What is this about?">\nHello World</textarea>},
-        text_area(:post, :title, placeholder: true)
-      )
-    end
-  end
-
-  def test_text_area_placeholder_with_human_attribute_name
-    with_locale :placeholder do
-      assert_dom_equal(
-        %{<textarea id="post_cost" name="post[cost]" placeholder="Total cost">\n</textarea>},
-        text_area(:post, :cost, placeholder: true)
-      )
-    end
-  end
-
-  def test_text_area_placeholder_with_human_attribute_name_and_value
-    with_locale :placeholder do
-      assert_dom_equal(
-        %{<textarea id="post_cost" name="post[cost]" placeholder="Pounds">\n</textarea>},
-        text_area(:post, :cost, placeholder: "uk")
-      )
-    end
-  end
-
-  def test_text_area_placeholder_with_locales_and_value
-    with_locale :placeholder do
-      assert_dom_equal(
-        %{<textarea id="post_written_on" name="post[written_on]" placeholder="Escrito en">\n2004-06-15</textarea>},
-        text_area(:post, :written_on, placeholder: "spanish")
-      )
-    end
-  end
-
-  def test_text_area_placeholder_with_locales_and_nested_attributes
-    with_locale :placeholder do
-      form_for(@post, html: { id: 'create-post' }) do |f|
-        f.fields_for(:comments) do |cf|
-          concat cf.text_area(:body, placeholder: true)
-        end
-      end
-
-      expected = whole_form("/posts/123", "create-post", "edit_post", method: "patch") do
-        %{<textarea id="post_comments_attributes_0_body" name="post[comments_attributes][0][body]" placeholder="Write body here">\n</textarea>}
-      end
-
-      assert_dom_equal expected, output_buffer
-    end
-  end
-
-  def test_text_area_placeholder_with_locales_fallback_and_nested_attributes
-    with_locale :placeholder do
-      form_for(@post, html: { id: 'create-post' }) do |f|
-        f.fields_for(:tags) do |cf|
-          concat cf.text_area(:value, placeholder: true)
-        end
-      end
-
-      expected = whole_form("/posts/123", "create-post", "edit_post", method: "patch") do
-        %{<textarea id="post_tags_attributes_0_value" name="post[tags_attributes][0][value]" placeholder="Tag">\nnew tag</textarea>}
-      end
-
-      assert_dom_equal expected, output_buffer
-    end
-  end
-
   def test_text_area
     assert_dom_equal(
       %{<textarea id="post_body" name="post[body]">\nBack to the hill and over it again!</textarea>},