Remove flaky configuration tests from presubmit

Removing following tests from presubmit until flakiness is fixed.
ActivityManagerDisplayTests.testContentDestroyOnDisplayRemoved
ActivityManagerAppConfigurationTests.testConfigurationUpdatesWhenRotatingWhileDocked
ActivityManagerAppConfigurationTests.testConfigurationUpdatesWhenResizedFromDockedStack

Bug: 63404575
Test: build host-side tests
Change-Id: I96a3c23a050fa0538026e1d6077fa862ee6e3e22
2 files changed