Remove Toast.java #announceForAccessibility

Toast was calling #announceForAccessibility when inflating text views.
This call is a no-op since the textView isn't attached to the hierarchy
yet. Tested with and without and removing has no effect.

Change-Id: I34e4e6867d02039456ab96ad132630e699d46c95
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5950526
Reviewed-by: Jinsuk Kim <jinsukkim@chromium.org>
Commit-Queue: Jinsuk Kim <jinsukkim@chromium.org>
Commit-Queue: Theresa Sullivan <twellington@chromium.org>
Auto-Submit: Theresa Sullivan <twellington@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1371720}