fixes master (#93568)

## About The Pull Request
Removes a var that's no longer defined in the code.

## Why It's Good For The Game
Makes the code compile again.

## Changelog
N/A

code/game/objects/items/melee/baton.dm

@@ -783,7 +783,6 @@
 	stun_armour_penetration = 40
 	throw_stun_chance = 60
 	convertible = FALSE
-	tip_changes_color = FALSE
 
 	obj_flags = UNIQUE_RENAME
 	unique_reskin = list(