Jeff moved to a different team so remove him from OWNERS am: 811be70d6c

Original change: https://android-review.googlesource.com/c/platform/external/mockftpserver/+/2060059

Change-Id: I63d5b213770c7bff35f77f958a297b83940b7072
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>