bpf: offload/test: remove use of TETHERING_{UID,GID} am: 1edfbf8f77

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/3226110

Change-Id: Id96bc8bed7c8aa6ab70bbda268c3e2a0fdba5361
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>