[GTK] Remove failure expections for newly passing tests. Unreviewed test gardening.
Created attachment 451111 [details] [fast-cq] Patch
Committed r289224 (246909@main): <https://commits.webkit.org/246909@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 451111 [details].
<rdar://problem/88576918>