Remove deprecated `test:all` and `test:all:db` tasks

railties/CHANGELOG.md

+*   Remove deprecated `test:all` and `test:all:db` tasks.
+
 *   Remove deprecated `Rails::Rack::LogTailer`.
 
     *Rafael Mendonça França*

railties/lib/rails/test_unit/testing.rake

@@ -21,29 +21,6 @@ namespace :test do
   desc "Run tests quickly, but also reset db"
   task :db => %w[db:test:prepare test]
 
-  desc "Run tests quickly by merging all types and not resetting db"
-  Rails::TestTask.new(:all) do |t|
-    t.pattern = "test/**/*_test.rb"
-  end
-
-  Rake::Task["test:all"].enhance do
-    Rake::Task["test:deprecate_all"].invoke
-  end
-
-  task :deprecate_all do
-    ActiveSupport::Deprecation.warn "rake test:all is deprecated and will be removed in Rails 5. " \
-    "Use rake test to run all tests in test directory."
-  end
-
-  namespace :all do
-    desc "Run tests quickly, but also reset db"
-    task :db => %w[db:test:prepare test:all]
-
-    Rake::Task["test:all:db"].enhance do
-      Rake::Task["test:deprecate_all"].invoke
-    end
-  end
-
   Rails::TestTask.new(single: "test:prepare")
 
   ["models", "helpers", "controllers", "mailers", "integration", "jobs"].each do |name|