Don't set LD_LIBRARY_PATH to the ART module for any tests. am: 56ab4a6915 am: 940428ea11

Original change: https://android-review.googlesource.com/c/platform/art/+/2967365

Change-Id: Ibb9dc71bbad2abb4d7bee38626d1486a9dd500a8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>