Remove unused setting 'fPermitInvalidStaticTests.'

This was only used for fragment processor CPP/H file generation, which
no longer exists.

Change-Id: I650444c4b9ae3197003ed6c5ff8e291e33965923
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/514216
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
3 files changed