Fix

Author: WyattBlue

av/codec/hwaccel.pyx

@@ -1,4 +1,3 @@
-import copy
 import weakref
 from enum import IntEnum
 

tests/test_decode.py

@@ -8,10 +8,6 @@
 
 import av
 
-# This import is needed to make the test_decoded_time_base test pass when we run only this test file.
-# Not sure why.
-from av.subtitles import subtitle
-
 from .common import TestCase, fate_suite