Revert "NetBpfLoad: gently enable mainline" am: 2afffc2d6a am: ee9c179602

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/3134201

Change-Id: I3e226a6bdd6ac224a55f4c3d22fbd51fd2e7860e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>