/msg $C DELETEME <#channel> [<secret>]
If you have less than owner access in a channel, $bdeleteme$b removes your access from the channel.  $bIf you do this by mistake, you must find a higher-ranked user to re-add you.$b
The secret value changes for each channel and each user.  If you do not include the secret value, $C will tell you what it should be.
$uSee Also:$u adduser, deluser, giveownership, users