mediav2 cts: remove muxer tolerance for mpeg4 writer

Test: atest android.mediav2.cts.MuxerTest
Bug: 157008437
Change-Id: I5e9cb49a30b060e98d08717cb4f9072734081e07
Merged-In: I5e9cb49a30b060e98d08717cb4f9072734081e07
(cherry picked from commit ea9b58edab2d73f3ff19585814db04901bb0ef2e)
1 file changed