Remove more unused MediaPlayer methods
<rdar://problem/58049744>
Created attachment 385989 [details] Patch
Created attachment 385996 [details] Patch for landing
Comment on attachment 385996 [details] Patch for landing Clearing flags on attachment: 385996 Committed r253722: <https://trac.webkit.org/changeset/253722>
All reviewed patches have been landed. Closing bug.