[automerger skipped] Remove compatibility_matrix.9.xml from 'next' builds am: f45d423a -s ours

am skip reason: Merged-In I843a24308a1653bff0b4842ff71e657304bea2c8 with SHA-1 6ea114dc is already in history

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2825154



Change-Id: Ic01dc69dfe293819232750e7a268d9a185d468b1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>