Remove unused column types override

activerecord/lib/active_record/core.rb

@@ -256,7 +256,6 @@ def initialize(attributes = nil, options = {})
       end
 
       @attributes = defaults
-      @column_types_override = nil
       @column_types = self.class.column_types
 
       init_internals
@@ -283,7 +282,6 @@ def initialize(attributes = nil, options = {})
     #   post.title # => 'hello world'
     def init_with(coder)
       @attributes = coder['attributes']
-      @column_types_override = coder['column_types']
       @column_types = self.class.column_types
 
       init_internals
@@ -357,7 +355,6 @@ def encode_with(coder)
       # FIXME: Remove this when we better serialize attributes
       coder['raw_attributes'] = attributes_before_type_cast
       coder['attributes'] = @attributes
-      coder['column_types'] = @column_types_override
       coder['new_record'] = new_record?
     end
 

activerecord/lib/active_record/persistence.rb

@@ -53,12 +53,7 @@ def instantiate(attributes, column_types = {})
           type = column_types.fetch(name) { klass.type_for_attribute(name) }
           h[name] = Attribute.from_database(value, type)
         end
-
-        klass.allocate.init_with(
-          'attributes' => attributes,
-          'column_types' => column_types,
-          'new_record' => false,
-        )
+        klass.allocate.init_with('attributes' => attributes, 'new_record' => false)
       end
 
       private
@@ -406,8 +401,7 @@ def reload(options = nil)
 
       @attributes.update(fresh_object.instance_variable_get('@attributes'))
 
-      @column_types           = self.class.column_types
-      @column_types_override  = fresh_object.instance_variable_get('@column_types_override')
+      @column_types = self.class.column_types
       self
     end