Remove extra definition of supports_migrations? from abstract_adaptor.rb

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@1892 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

activerecord/CHANGELOG

 *SVN*
 
+* Remove extra definition of supports_migrations? from abstract_adaptor.rb [Nicholas Seckar]
+
 * Fix acts_as_list so that moving next-to-last item to the bottom does not result in duplicate item positions
 
 * Fixed incompatibility in DB2 adapter with the new limit/offset approach #1718 [Maik Schmidt]

activerecord/lib/active_record/connection_adapters/abstract_adapter.rb

@@ -410,10 +410,6 @@ def change_column_default(table_name, column_name, default)
         raise NotImplementedError, "change_column_default is not implemented"
       end
       
-      def supports_migrations?
-        false
-      end      
-
       def rename_column(table_name, column_name, new_column_name)
         raise NotImplementedError, "rename_column is not implemented"
       end