Remove unnecessary blank line

Author: lunny

models/oauth2_application.go

@@ -265,7 +265,6 @@ func DeleteOAuth2Application(id, userid int64) error {
 	if err := sess.Begin(); err != nil {
 		return err
 	}
-
 	if err := deleteOAuth2Application(sess, id, userid); err != nil {
 		return err
 	}