Stop Sheet Snatcher Spam (#22180)

There's like 8 different items in the game that go in a sheet snatcher.
If the intended purpose of the Sheet Snatcher is to grab all of the
material sheets from a giant pile of random crap in the warehouse, then
it spamming the chat is apparently incredibly useless. This PR was
requested to me by some warehouse mains.

<img width="425" height="85" alt="image"
src="https://github.com/user-attachments/assets/427c2426-6784-4377-8d59-1aa8d7469409"
/>

code/game/objects/items/weapons/storage/bags.dm

@@ -152,8 +152,6 @@
 
 /obj/item/storage/bag/sheetsnatcher/can_be_inserted(obj/item/W as obj, stop_messages = 0)
 	if(!istype(W,/obj/item/stack/material))
-		if(!stop_messages)
-			to_chat(usr, "The snatcher does not accept [W].")
 		return 0
 	var/current = 0
 	for(var/obj/item/stack/material/S in contents)