bpf_connectivity_headers - remove visibility from //system/netd/tests

depends on at least:
  https://android-review.git.corp.google.com/c/platform/system/netd/+/2363881
  'cleanup a bunch of bpf related things (header files mostly)'

Test: TreeHugger
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: Ifaf20267f791af09f8c76dda5dfbc38ebc75c4ba
1 file changed