Fix out of date comment in the APF Arp filter am: 72488ca020 am: 48c8718a4d am: ff9d60912c

Original change: https://android-review.googlesource.com/c/platform/packages/modules/NetworkStack/+/2840298

Change-Id: I1327377bfa193a775a1e674426f1359808ad3ede
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>