Removed unused return parameter name
Removed unused return parameter name

garyburd/redigo,lvtiendev/redigo,stvp/redigo,mbrukman/redigo,brodock/redigo,kylebrandt/redigo,beni55/redigo,MCProHosting/redigo,Charlesdong/redigo,outrightmental/go-redigo,nativetouch/redigo,linkeo/redigo,gomodule/redigo,kpumuk/redigo