Fixing flake8 E303 errors

third_party/2/gflags.pyi

@@ -109,8 +109,6 @@ def RegisterValidator(flag_name: str,
                       flag_values: FlagValues = ...) -> None: ...
 def MarkFlagAsRequired(flag_name: str, flag_values: FlagValues = ...) -> None: ...
 
-
-
 def DEFINE(parser: ArgumentParser, name: str, default: Any, help: str,
            flag_values: FlagValues = ..., serializer: ArgumentSerializer = ..., **args: Any) -> None: ...
 def DEFINE_flag(flag: Flag, flag_values: FlagValues = ...) -> None: ...