Revert "Support clip masks for SaveLayerRec and drawSpecial in Ganesh"

This reverts commit 053b2939938ca55cbc7aa1457628c4c3a1bcd7fa.

Reason for revert: breaks on Intel Vulkan

Original change's description:
> Support clip masks for SaveLayerRec and drawSpecial in Ganesh
> 
> Change-Id: I2e37e28fcbd3631bccc65253604015871503a089
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/205929
> Commit-Queue: Michael Ludwig <michaelludwig@google.com>
> Reviewed-by: Robert Phillips <robertphillips@google.com>

TBR=robertphillips@google.com,reed@google.com,michaelludwig@google.com

Change-Id: Ic230fa9bcb16c97f218b94922a280f5b86a90491
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/206203
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
Commit-Queue: Michael Ludwig <michaelludwig@google.com>
3 files changed