I haven't looked at your whole code, but at first glance, you could've just used one alias like this:

on *:text:*:#:relay
on *:action:*:#:relay
on *:quit:relay
on !*:join:#:relay
on !*:part:#:relay
on *:kick:#:relay
on *:rawmode:#:relay
on *:topic:#:relay
alias -l relay {
  var %tok = $findtok($relay.networks,$network,1,32) 
  if ($chan == $gettok($relay.channels,%tok,32)) { 
    var %lcv = 1 
    var %tot = $gettok($relay.networks,0,32) 
    while (%lcv <= %tot) { 
      var %cid = $cid 
      var %ncid = $getcidfromnet($gettok($relay.networks,%lcv,32)) 
      if (%ncid != %cid) { 
        var %net = $network 
        scid %ncid 
        msg $gettok($relay.channels,%lcv,32) $relay.fmt.part($nick,$chan,%net,$1-) 
        scid %cid 
      } 
      inc %lcv 
    } 
  } 
}

This saves you many bytes. Again, you may need to make some needed adjustment, as I only looked at your code briefly.