Remove tomcherry from OWNERS am: fbd377ffc4 am: 312b4df53b

Original change: https://android-review.googlesource.com/c/platform/hardware/google/pixel-sepolicy/+/1552558

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I4f3907eaf1456caa6d3da1c57aff11c798508a3e