Usage: `/KICKBAN [channel] nick [reason]'
Forcibly removes a user from the named channel and prevents him from re-entering with a ban. The user sending the /KICKBAN command must be a channel operator of the channel. If the optional [reason] is given, it will be shown as the reason for the kick & ban.
Related: BAN-BANDEL- BANLIST-KICK- QKICK-QKICKBAN
Examples:
`/KICKBAN #AmIRC Freddie You dirty pirate!'
Forces 'Freddie' from channel #AMIRC with the reason 'YOU DIRTY
PIRATE!' and cannot re-enter because he's banned.