[owners] Remove dimitrysh@google.com from OWNERS am: c5561347f8

Original change: https://android-review.googlesource.com/c/device/google/contexthub/+/3499250

Change-Id: I269f694c7ef04aa2b27777931bdff161c76e6999
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>