Remove PLS path renderer

Change-Id: Ib727b0749a5a7da95832970e79804417e8b6a247
Reviewed-on: https://skia-review.googlesource.com/9300
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
38 files changed