Stop installing playstore into android 28(P) and 32(12L) AVDs.

After adding it in crrev.com/c/3858504, it turns out the playstore does
not work as expected. See crbug.com/1278096#c14 for more details.

Bug: 1278096, 1346485
Change-Id: I15c91d042705493e4f74ab228ec33114622c2e53
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3888285


Auto-Submit: Haiyang Pan <hypan@google.com>
Commit-Queue: Ben Pastene <bpastene@chromium.org>
Reviewed-by: Ben Pastene <bpastene@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1045459}