Don't disable JIT GC when instrumentation is enabled am: 0acf79c6ac

Original change: https://googleplex-android-review.googlesource.com/c/platform/art/+/18456063

Change-Id: I535a309f4e031fdd948990b01f591fed59f7c9ed
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>