Uninstalling from Joomla
To uninstall Joomdle from Joomla, search for "joomdle" in extension manager, and check all the resutls. Then, unsitall them all at once.
Uninstalling from Moodle
To uninstall Joomdle from Moodle, just remove the Joomdle directory from the moodle/auth folder, and visit Notifications page in Moodle.