Revert of Fix ClipMaskManager's SW-fallback logic (patchset #4 id:60001 of https...

Revert of Fix ClipMaskManager's SW-fallback logic (patchset #4 id:60001 of https://codereview.chromium.org/1421533007/ )

Reason for revert:
Logic may be incorrect

Original issue's description:
> Fix ClipMaskManager's SW-fallback logic
>
>
> 'useSWOnlyPath' was not correctly toggling between stencil and color draws so there was a mismatch with the behavior in createAlphaClipMask (i.e., we were inadvertently rendering some of the elements in a clip using SW but using stenciling for others - precisely what 'useSWOnlyPath' was intended to prevent).
>
> Committed: https://skia.googlesource.com/skia/+/5c3ea4cd3921e8904d4f201bcdedfd5b8a726542

TBR=bsalomon@google.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/1426443008