Revert "prevent downstream nil exception when view_definition is nil."

Author: annaswims

lib/active_record/connection_adapters/sqlserver/schema_statements.rb

@@ -352,7 +352,7 @@ def table_name_or_views_table_name(table_name)
 
 def views_real_column_name(table_name, column_name)
 view_definition = schema_cache.view_information(table_name)[:VIEW_DEFINITION]
-match_data = view_definition.match(/([\w-]*)\s+as\s+#{column_name}/im) rescue nil
+match_data = view_definition.match(/([\w-]*)\s+as\s+#{column_name}/im)
 match_data ? match_data[1] : column_name
 end