Remove the dexlayout library from the APEX. Also remove the dexlayout(d) and dexdiag binaries from the debug APEX and the art-tools mk module. Also remove references to the dexlayout-related gtests. Test: art/tools/buildbot-build.sh Test: art/build/apex/runtests.sh Bug: 325430813 Change-Id: I6a6cbc0eecfedf3e020eb1c9e4d4f1479cf4a6dc