Remove ILBC audio codec as WebRTC audio codec
<rdar://problem/72302868>
Created attachment 416276 [details] Patch
Created attachment 416277 [details] Patch
commit-queue failed to commit attachment 416277 [details] to WebKit repository.
Committed r270885: <https://trac.webkit.org/changeset/270885> All reviewed patches have been landed. Closing bug and clearing flags on attachment 416277 [details].