Remove accessRenderTarget call from Clear tests

In the split-opList world the full screen clear optimization no longer relies on the rendertarget ID.

Change-Id: Ifc7bf10753355a18507998e30f9de7e8c1eb57c1
Reviewed-on: https://skia-review.googlesource.com/18497
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
1 file changed