Revert "start bpfloader asynchronously" am: 2a775a423a am: d230ef3812 am: af08072d80

Original change: https://android-review.googlesource.com/c/platform/system/bpf/+/1347790

Change-Id: Ib403b37a7f2e73f120fafb389d5c5734e6eb7915