Move ReflectionTest.StaticMainMethod to compiler/.

And clean up some related code.

Test: m test-art-host-gtest
Test: atest art_standalone_runtime_tests
Test: atest art_standalone_compiler_tests
Test: atest ArtGtestsTargetChroot
Change-Id: I6b60e553dad7111f6247fbd873cd46af11f00276
14 files changed