How to remove network that will not connect iOS 8.1.1

I Have and iPad Air with 8.1.1 installed. I have several wireless routers on my property. One SSID shows up but will not connect on this IPad. All other iPad work fine as do the Windows machine. I would like to have this pad "forget" this connection, however no option is available under WiFi since the IPad never connects to the network. Sometimes the IPad message is wrong password, sometimes it just says fail. I really don't want to reset all the connections as have numerous connections that work well. Any idea how to remove this network ?