Don't check for winsock header etc

Change-Id: Ia33b95bd98c1de91409841b30a0ee7ebcb9b4e1d
Reviewed-on: http://review.couchbase.org/30705
Reviewed-by: Trond Norbye <trond.norbye@gmail.com>
Tested-by: Trond Norbye <trond.norbye@gmail.com>