Balances shotguns slugs and revolvers (#4309)

Shotgun slugs and revolvers were pretty much stong, by instagibbing people ignoring armor, due to having a maim bonus. This pr will remove this, those weapons can still maim and gib limbs, but without any magical force that is able to ignore armor. Plasma cutter and heavy sniper bullets still keep this feature for obvious reasons.

code/modules/projectiles/projectile/bullets.dm

@@ -135,9 +135,6 @@
 
 /obj/item/projectile/bullet/pistol/strong //revolvers and matebas
 	damage = 60
-	maiming = 1
-	maim_rate = 25
-	maim_type = DROPLIMB_BLUNT
 
 /obj/item/projectile/bullet/pistol/rubber //"rubber" bullets
 	name = "rubber bullet"
@@ -152,8 +149,6 @@
 /obj/item/projectile/bullet/shotgun
 	name = "slug"
 	damage = 60
-	maiming = 1 //To prevent rando headgibbing, it uses the special headgib damage model. Don't get me wrong, it'll still kill the man, but could be cloned.
-	maim_rate = 25
 
 /obj/item/projectile/bullet/shotgun/beanbag		//because beanbags are not bullets
 	name = "beanbag"
@@ -162,8 +157,6 @@
 	agony = 60
 	embed = 0
 	sharp = 0
-	maiming = 0
-	maim_rate = 0
 
 /obj/item/projectile/bullet/shotgun/incendiary
 	name = "incendiary"
@@ -173,8 +166,6 @@
 	embed = 0
 	sharp = 0
 	incinerate = 10
-	maiming = 0
-	maim_rate = 0
 
 //Should do about 80 damage at 1 tile distance (adjacent), and 50 damage at 3 tiles distance.
 //Overall less damage than slugs in exchange for more damage at very close range and more embedding
@@ -184,9 +175,6 @@
 	pellets = 6
 	range_step = 1
 	spread_step = 10
-	maiming = 1
-	maim_rate = 1 //6% base chance of gib if all pellets hit. Likely to blow limbs at point blank. (As it should be.)
-	maim_type = DROPLIMB_BLUNT
 
 /* "Rifle" rounds */