Remove last vestiges of DSL from SPIR-V code generator.

I had already cleaned up the SPIR-V output from SK_CLOCKWISE_BUILTIN
at http://review.skia.org/694816, so there aren't any more changes in
the generated code.

Change-Id: I2979aeae39e830043e892e2bccb9916f4ceb0bbd
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/694616
Commit-Queue: Arman Uguray <armansito@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Arman Uguray <armansito@google.com>
1 file changed