TestNgRunner - fire events properly

The documentation for org.junit.runner.notification.RunNotifier
fireTestFinished() makes it clear that you must call it if you
called fireTestStarted(). This change fixes a problem where
fireTestFinished() was only called if it failed.

Also, cleans up some unused imports and constants.

Bug: 30801147
Test: run cts modules CtsLibcoreTestCases CtsLibcoreOjTestCases
Change-Id: I5fb3f14ba387a70e64d4cc5f19ded3fef4e9de0b
2 files changed