[Rails5] Pass a few Migration::ColumnsTest examples.

* Pass: test_rename_column_with_sql_reserved_word
* Pass: test_rename_column_using_symbol_arguments

Author: metaskills

lib/active_record/connection_adapters/sqlserver/schema_statements.rb

@@ -146,7 +146,6 @@ def change_column_default(table_name, column_name, default_or_changes)
 
         def rename_column(table_name, column_name, new_column_name)
           clear_cache!
-          detect_column_for! table_name, column_name
           identifier = SQLServer::Utils.extract_identifiers("#{table_name}.#{column_name}")
           execute_procedure :sp_rename, identifier.quoted, new_column_name, 'COLUMN'
           rename_column_indexes(table_name, column_name, new_column_name)