Remove unused function

I believe this did not work in the first place. CompletableFuture#get()
might throw a timeout exception if TIMEOUT_MS is reached which fails the
assertion (but it should not!).

Anyway, it is unused, so just delete this method.

Test: TH
Change-Id: I43a747179eeaded320df32f40f1237be11de7867
1 file changed