Syntax: %bSVSPART <nick|pattern|#channel> [#channel]%b

Parts the client "nick" (or clients with nick pattern "pattern",
or clients on #channel) from the specified #channel. If last
parameter is omitted, parts all clients from a single channel.

Note: this will only work on ircd-hybrid-7-bg-1.3 (and greater)

Aliases: none
