okay I removed the users (with no extension file) to users.dgt no I dont want to delete everything from it I jsut wanna delete the $2. and $2 is not like a topic ie: [$2] its just a list. here is the code I use d to make the list:
/users {
  set %a 0
  inc %a 1
  set %b $read(Users.dgt,%a)
  if (%b == $null) { goto a }
  else { goto start }
  write Users.dgt $nick

I just need to get rid of the line that $2 (user's nick) is in.