Remove our custom Enum class

Author: WyattBlue

av/codec/codec.pyi

@@ -5,7 +5,6 @@ from typing import ClassVar, Literal, overload
 from av.audio.codeccontext import AudioCodecContext
 from av.audio.format import AudioFormat
 from av.descriptor import Descriptor
-from av.enum import EnumFlag
 from av.subtitles.codeccontext import SubtitleCodecContext
 from av.video.codeccontext import VideoCodecContext
 from av.video.format import VideoFormat

av/enum.pxd

@@ -1,5 +1,3 @@
 
 cdef int stash_exception(exc_info=*)
-
 cpdef int err_check(int res, filename=*) except -1
-cpdef make_error(int res, filename=*, log=*)