Removes/Refactors /mob/unEquip (#22918)

* Part1

* IT COMPILES!!!!

* Fuck wait this was missing from that last

* Update handlabeler.dm

* Update handlabeler.dm

* Fixes n shit

* Fix this

* Fixes #23310

* Fucking @RemieRichards was right

* Fixes devil unEquip

* WTF ARE BITFLAGS?

* THERES THE FUCKING PROBLEM

* Fixes

code/game/objects/structures/artstuff.dm

@@ -19,7 +19,7 @@
 /obj/structure/easel/attackby(obj/item/I, mob/user, params)
 	if(istype(I, /obj/item/weapon/canvas))
 		var/obj/item/weapon/canvas/C = I
-		user.unEquip(C)
+		user.dropItemToGround(C)
 		painting = C
 		C.loc = get_turf(src)
 		C.layer = layer+0.1

code/game/objects/structures/beds_chairs/chair.dm

@@ -254,7 +254,6 @@
 	if(remaining_mats)
 		for(var/M=1 to remaining_mats)
 			new stack_type(get_turf(loc))
-	user.unEquip(src,1) //Even NODROP chairs are destroyed.
 	qdel(src)
 
 

code/game/objects/structures/displaycase.dm

@@ -213,8 +213,7 @@
 	else if(istype(I, /obj/item/weapon/electronics/airlock))
 		user << "<span class='notice'>You start installing the electronics into [src]...</span>"
 		playsound(src.loc, I.usesound, 50, 1)
-		if(user.unEquip(I) && do_after(user, 30, target = src))
-			I.loc = src
+		if(do_after(user, 30, target = src) && user.transferItemToLoc(I,src))
 			electronics = I
 			user << "<span class='notice'>You install the airlock electronics.</span>"
 

code/game/objects/structures/noticeboard.dm

@@ -29,9 +29,8 @@
 			user << "<span class='info'>You are not authorized to add notices</span>"
 			return
 		if(notices < 5)
-			if(!user.unEquip(O))
+			if(!user.transferItemToLoc(O, src))
 				return
-			O.loc = src
 			notices++
 			icon_state = "nboard0[notices]"
 			user << "<span class='notice'>You pin the [O] to the noticeboard.</span>"