[net] Don't compile RemoteTestServer for iOS since it's unused

Noticed because RemoteTestServer refers to BaseServer which
is not included in ios builds.

Change-Id: I006a32ca751dd8d9e3c3d6be6ece93f30e0bc992
Reviewed-on: https://chromium-review.googlesource.com/1244841
Commit-Queue: Daniel Bratell <bratell@opera.com>
Reviewed-by: Asanka Herath <asanka@chromium.org>
Cr-Commit-Position: refs/heads/master@{#594639}
1 file changed