Update test flakes list

Removes two tests that have been fixed:

o ExplicitCastArgumenstTest#testMultipleArgs
o OsTest#test_socket_setSockoptTimeval_effective

Bug: 209958457
Bug: 216667550
Fix: 217356401
Test: Rely on ART MTS ATP test runs
Change-Id: I446eeda790d0f8bb9e9f14b9e9c5d6e22c7a6474
1 file changed