[CLOSED PR] Disables harbinger wraith on RP

[Emimiyu]

Imo, Harbringer player summon seems friendlier to RP with than... poltergeist and plaguebringer rat. Most of them are big critter that are capable to talk. Rats tend to be easier to hunt and have less reason to talk, polt usually ended up just adding two extra wraith into the game. The NPC summon feels tiring but they are sometimes easy to wiped out if people are already on the fight mode.

Meanwhile, plaguebringer can gib people without them knowing and plague rats can do certain stuff such as rushing for captain spare and wielding weapon. And trickster usually ended up as three wraiths in a trenchcoat.