proc: disable part of TestAttachDetach test on macOS (#2429)
proc: disable part of TestAttachDetach test on macOS (#2429)

There seems to be a problem where debugserver will leave a zombie
process instead of detaching correctly, we are sending the right
commands, it doesn't seem to be a problem with Delve.
go-delve/delve,go-delve/delve,go-delve/delve,go-delve/delve,go-delve/delve