Remove useless error log
Remove useless error log

Signed-off-by: Flavio Crisciani <59eae1aa696b1b39cd87a38bdba3f0b2630647f9@docker.com>

kolyshkin/libnetwork,mahak/libnetwork,docker/libnetwork,kolyshkin/libnetwork,vdemeester/libnetwork,mahak/libnetwork,docker/libnetwork,fcrisciani/libnetwork,mahak/libnetwork,medallia/libnetwork,vdemeester/libnetwork,abhi/libnetwork,abhi/libnetwork,medallia/libnetwork,medallia/libnetwork,fcrisciani/libnetwork,docker/libnetwork,abhi/libnetwork,vdemeester/libnetwork,kolyshkin/libnetwork