[Android] Revert arm and arm64 device PR runs

[steveisok]

We're still having capacity issues even after doubling the number of devices. Only run device tests on the rolling build for the time being.

[dotnet-issue-labeler]

I couldn't figure out the best area label to add to this PR. If you have write-permissions please help me learn by adding exactly one area label.

[steveisok]

/cc @fanyang-mono @SamMonoRT

[SamMonoRT]

Do we have an average daily usage of these devices and how long they back up queues, which lanes are taking up the most time on these devices ?

Also for my knowledge, what is a rolling build - how often does the test suite run if we switch to a rolling build only ?

[fanyang-mono]

Do we have an average daily usage of these devices and how long they back up queues, which lanes are taking up the most time on these devices ?

Also for my knowledge, what is a rolling build - how often does the test suite run if we switch to a rolling build only ?

I am guessing rolling build means build only lanes, those lanes don't run much tests, so take much less time to finish.

[akoeplinger]

No, rolling builds mean the builds that happen on the main branch after something is merged (they're batched so don't happen for every single commit, but multiple times per day). They do run tests.

[fanyang-mono]

No, rolling builds mean the builds that happen on the main branch after something is merged (they're batched so don't happen for every single commit, but multiple times per day). They do run tests.

I see. That's better than I thought.