Remove obsolete `doThrow` pattern from some tests.

And mark methods with $noinline$ instead if they were not
marked yet. Also exercise some test methods that were
previously unused, only CHECK-ed.

Test: testrunner.py --host --optimizing -t 536 -t 567 -t 570
Change-Id: I8d8e8c07f2e0002dccd665878b47c547c6a375a3
4 files changed