Revert "[MIRROR] Replace all secondary flags with bitflags stored in the flags_2 var" (#2457)

ok you know what yeah i think i'll properly mirror https://github.com/Citadel-Station-13/Citadel-Station-13/pull/2411

code/game/objects/items/weapons/implants/implant.dm

@@ -9,7 +9,7 @@
 	item_color = "b"
 	var/allow_multiple = FALSE
 	var/uses = -1
-	flags_1 = DROPDEL_1
+	flags = DROPDEL
 
 
 /obj/item/weapon/implant/proc/trigger(emote, mob/living/carbon/source)

code/game/objects/items/weapons/implants/implant_chem.dm

@@ -3,7 +3,7 @@
 	desc = "Injects things."
 	icon_state = "reagents"
 	origin_tech = "materials=3;biotech=4"
-	container_type = OPENCONTAINER_1
+	container_type = OPENCONTAINER
 
 /obj/item/weapon/implant/chem/get_data()
 	var/dat = {"<b>Implant Specifications:</b><BR>