[automerger skipped] Remove compatibility_matrix.9.xml from 'next' builds am: f45d423af2 -s ours am: 9b55036377 -s ours

am skip reason: Merged-In I843a24308a1653bff0b4842ff71e657304bea2c8 with SHA-1 6ea114dcd0 is already in history

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

Change-Id: Ie959c36bf398a3d0968b42138a8720fce08c3135
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>