NetBpfLoad: remove support for 'size_of_bpf_prog_def' am: e666d85ccf am: a3e6be9997

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/3221266

Change-Id: I4cc8ea85117a6354ebef9520a970d839116c542a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>