Omit path_text benches on Pixel3a

Bug: skia:9413
Change-Id: If64176e0f5553077179479df0ec11767391eaaa9
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/240876
Auto-Submit: Ben Wagner aka dogben <benjaminwagner@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
2 files changed