MGC Chatbox Evo, removal

[Drocr]

I have recently uninstalled this application from my forum. but the custom permissions for the chatbox still remain,

for example when i go to create a new user group it is still giving me the options to enable permissions for the evo chat box even tho it does not exist,

is there a way to remove the permissions in the acp?

or does some sql table edit have to be done to get rid of the custom permissions?

or would a reinstall uninstall get rid of the custom permissions?

or do I have to apply reset option to all forum permissions?