We are checking for network access in onResume(), which
wouldn't be called until the screen is on. So, there
shouldn't be a need for the extra sleep after turning
on the screen.
Also, remove redundant waits after the last try when
doing verifications as the test is anyway to going to
fail at this point.
Bug: 231440256
Test: atest tests/tests/app.usage/src/android/app/usage/cts/UsageStatsTest.java
Change-Id: I28429c929142a95c19b1f8a5b7d28b9c8c4a45b9
Merged-In: I28429c929142a95c19b1f8a5b7d28b9c8c4a45b9
c2edb9cbc4