Hello Chirpy,
it will be great if we could have a Button to Remove an IP from any IPTABLE group, right now we only can remove IPs that are in the CSF.DENY file, but it could be the case that we have added an IP that is not there and we need to remove it.
I know that we can enter as root and delete it from there, but it will be easier if we have that option in CSF.
I don't really see the need, so long as you use csf to deny an IP address through csf -d or csf -td you can use the existing interface. If you use any other method to manually add an ip address it falls outside of the influence of csf.