Remove most of GrConfig.h

Change-Id: I0f693bed0778151f93d07cd42c6b597566695ab1
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/257999
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
76 files changed