Whether or not a pacifist can fire a gun is no longer based on the gun being harmful, but the chambered round being harmful (#36670)

fix: makes dragnet non harmful
tweak: pacifists can now use any disabler or stun setting on any energy gun
code: removed all of the pacifism check code from code/modules/mob/living/living.dm
code: gun objects no longer have a harmful variable, instead, ammo_casing objects now have a harmful variable, which is by default set to TRUE
code: if a pacifist fires a gun, it checks whether or not the round chambered is lethal, instead of whether or not the gun itself is lethal.

code/modules/projectiles/guns/misc/medbeam.dm

@@ -5,7 +5,6 @@
 	icon_state = "chronogun"
 	item_state = "chronogun"
 	w_class = WEIGHT_CLASS_NORMAL
-	harmful = FALSE
 
 	var/mob/living/current_target
 	var/last_check = 0