Delete SDM and SDC files on a successful dexopt. After a successful dexopt (typically during background dexopt job), the SDM and SDC files become obsolete, so we delete them as an optimization, to release disk space as soon as possible. Bug: 377474232 Test: atest ArtServiceTests Test: atest art_standalone_artd_tests Change-Id: I9598e3b6d71a2575d73885cc4d772737f9bfb2b6