tree cc6a6c8976a24f0e0017d26d2f76e176f8923dbb
parent f8b07e648343c0115780ccbef55ab4f3a75666da
author Angie Chiang <angiebird@google.com> 1635549525 -0700
committer Angie Chiang <angiebird@google.com> 1635789365 +0000

Remove anc_frame_offset

We always call init_gop_grames_for_tpl at
gf_frame_index == 0
Therefore, anc_frame_offset will always be zero

BUG=aomedia:3144

Change-Id: I1d158b95c81edeec8c6554e6b7463b3df37f8c66