Remove unnecessary check when create bay
Remove unnecessary check when create bay

After Ibb18d391f991a10c36b2f4a7da791f6722b04a3a is merged, this
check is no longer needed, because the args.timeout will never
be None, it is set to default 0.

Change-Id: I36f275347c2955e688e7c178fee228157063887c

openstack/python-magnumclient