Stop blacklisting some critical unit tests on Metal

Bug: skia:6653
Change-Id: I034c8183c5550914d155acf842a7a73c6f1b5d15
Reviewed-on: https://skia-review.googlesource.com/149680
Reviewed-by: Greg Daniel <egdaniel@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
2 files changed