[NETD-BPF#13] Delete libbpf_android_test from system/bpf am: b81aef32e5 am: 798d0ae220 am: 53ccd5627c

Original change: https://android-review.googlesource.com/c/platform/system/bpf/+/1871536

Change-Id: I84ef0cf9885faa788ba06dc844b06d1b76a47829