Revert^4 "CHA for interface method."

This reverts commit 43e99be9.

Also fix the issue that tries to change invoke-interface to
an invoke-virtual of a cross-dexfile proxy method. Added a
testcase.

Test: run-libcore-tests.sh --mode=host --variant=X64 --debug
Test: ART_TEST_JIT=true m -j20 test-art-host-run-test
Change-Id: Iacdf9d7ad93590e8163ed59d5838d70700a69018