Remove unused editable image code
Created attachment 407575 [details] Patch
Created attachment 407577 [details] Patch
Created attachment 407581 [details] Patch
Created attachment 407583 [details] Patch
Committed r266342: <https://trac.webkit.org/changeset/266342> All reviewed patches have been landed. Closing bug and clearing flags on attachment 407583 [details].
<rdar://problem/68049595>