Fixes invisible egg and donut boxes

Also removed duplicate instances of the pizza box icons

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

@@ -371,7 +371,7 @@
  */
 /obj/item/storage/bag/tray
 	name = "tray"
-	icon = 'icons/obj/food/food.dmi'
+	icon = 'icons/obj/food/containers.dmi'
 	icon_state = "tray"
 	desc = "A metal tray to lay food on."
 	force = 5

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

@@ -14,7 +14,7 @@
  */
 
 /obj/item/storage/fancy/
-	icon = 'icons/obj/food/food.dmi'
+	icon = 'icons/obj/food/containers.dmi'
 	icon_state = "donutbox6"
 	name = "donut box"
 	burn_state = FLAMMABLE
@@ -43,7 +43,6 @@
  */
 
 /obj/item/storage/fancy/donut_box
-	icon = 'icons/obj/food/food.dmi'
 	icon_state = "donutbox6"
 	icon_type = "donut"
 	name = "donut box"
@@ -61,7 +60,6 @@
  */
 
 /obj/item/storage/fancy/egg_box
-	icon = 'icons/obj/food/food.dmi'
 	icon_state = "eggbox"
 	icon_type = "egg"
 	name = "egg box"