[webkitpy] Remove skipped file related crufts
Created attachment 247428 [details] Patch
The only one user was skipped_perf_tests(), but these functions became unused after http://trac.webkit.org/changeset/179610
Comment on attachment 247428 [details] Patch Clearing flags on attachment: 247428 Committed r180681: <http://trac.webkit.org/changeset/180681>
All reviewed patches have been landed. Closing bug.