Remove useless argument in #columns.

activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb

@@ -56,7 +56,7 @@ module ActiveRecord
 
       # Returns an array of Column objects for the table specified by +table_name+.
       # See the concrete implementation for details on the expected parameter values.
-      def columns(table_name, name = nil) end
+      def columns(table_name) end
 
       # Checks to see if a column exists in a given table.
       #

activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb

@@ -409,7 +409,7 @@ module ActiveRecord
       end
 
       # Returns an array of +Column+ objects for the table specified by +table_name+.
-      def columns(table_name, name = nil)#:nodoc:
+      def columns(table_name)#:nodoc:
         sql = "SHOW FULL FIELDS FROM #{quote_table_name(table_name)}"
         execute_and_free(sql, 'SCHEMA') do |result|
           each_hash(result).map do |field|

activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb

@@ -891,7 +891,7 @@ module ActiveRecord
       end
 
       # Returns the list of all column definitions for a table.
-      def columns(table_name, name = nil)
+      def columns(table_name)
         # Limit, precision, and scale are all handled by the superclass.
         column_definitions(table_name).collect do |column_name, type, default, notnull|
           PostgreSQLColumn.new(column_name, default, type, notnull == 'f')

activerecord/lib/active_record/connection_adapters/sqlite_adapter.rb

@@ -324,7 +324,7 @@ module ActiveRecord
       end
 
       # Returns an array of +SQLiteColumn+ objects for the table specified by +table_name+.
-      def columns(table_name, name = nil) #:nodoc:
+      def columns(table_name) #:nodoc:
         table_structure(table_name).map do |field|
           case field["dflt_value"]
           when /^null$/i

activerecord/lib/active_record/reflection.rb

@@ -229,8 +229,8 @@ module ActiveRecord
         end
       end
 
-      def columns(tbl_name, log_msg)
-        @columns ||= klass.connection.columns(tbl_name, log_msg)
+      def columns(tbl_name)
+        @columns ||= klass.connection.columns(tbl_name)
       end
 
       def reset_column_information

activerecord/test/active_record/connection_adapters/fake_adapter.rb

@@ -33,7 +33,7 @@ module ActiveRecord
           options[:null])
       end
 
-      def columns(table_name, message)
+      def columns(table_name)
         @columns[table_name]
       end
     end