When you use the Wi-fi Bridge feature of your CyborgUnplug device, it saves configuration file of a given wi-fi access point (SSID). If you want to manually inspect or delete this file, do the following:
Connect to your unplug device via ssh over Ethernet.
ssh root@10.10.11.1
Delete the savedbridge config file that saves the Wi-fi data.
rm /www/config/savedbridge
Once you have done that, reboot your device and it will no longer remember that Wi-fi access point.