Revert "Implement window rectangles in vulkan"

This reverts commit 94c0468b2b4255e3beed81efdcfbf6d9d39e11e4.

Reason for revert: <INSERT REASONING HERE>

Original change's description:
> Implement window rectangles in vulkan
> 
> Bug: skia:
> Change-Id: I32c079b90a5503c797dfc073a093f940cd8c550a
> Reviewed-on: https://skia-review.googlesource.com/65423
> Commit-Queue: Chris Dalton <csmartdalton@google.com>
> Reviewed-by: Greg Daniel <egdaniel@google.com>
> Reviewed-by: Brian Salomon <bsalomon@google.com>

TBR=egdaniel@google.com,bsalomon@google.com,csmartdalton@google.com

Change-Id: I5a90cb57fb5d4bcf8c7e76a5f71a7f16edbaf6be
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:
Reviewed-on: https://skia-review.googlesource.com/67060
Reviewed-by: Jim Van Verth <jvanverth@google.com>
Commit-Queue: Jim Van Verth <jvanverth@google.com>
diff --git a/gm/windowrectangles.cpp b/gm/windowrectangles.cpp
index 034b30f..b4f6562 100644
--- a/gm/windowrectangles.cpp
+++ b/gm/windowrectangles.cpp
@@ -256,7 +256,7 @@
         0>()
     );
 
-    rtc->priv().clearStencilClip(GrFixedClip::Disabled(), false, true);
+    rtc->priv().clearStencilClip(GrFixedClip::Disabled(), false);
 
     for (int y = 0; y < kDeviceRect.height(); y += kMaskCheckerSize) {
         for (int x = (y & 1) == flip ? 0 : kMaskCheckerSize;