Remove unused global const variable am: 6dc643db27 am: 16e747fe60 am: 0b06be49cc am: dc85d9f8ad

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/3298493

Change-Id: I39199f9f4f9c7f3aafa2f7d71bbd33e48bf85e5c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>