Removes swiftness, add speed potions back as oil slick potions (#20939)

* Removes swiftness, add speed potions back as oil potions

* no shorting, icon update on mob

* early and forgotten returns

* ramon oil colours

* Update code/modules/research/xenobiology/xenobiology.dm

Co-authored-by: Luc <89928798+lewcc@users.noreply.github.com>

* no more slipery vehicles, now slippery tables

* just because it compiled the first time doesn't mean the second list will compile idiot

* icons my hated

* bottle4

* cleaner up

* qwerty my man what you doin: s34n 2023

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Co-authored-by: Luc <89928798+lewcc@users.noreply.github.com>

code/game/objects/items/weapons/dna_injector.dm

@@ -286,28 +286,6 @@
 	block = GLOB.regenerateblock
 	..()
 
-/obj/item/dnainjector/runfast
-	name = "DNA-Injector (Increase Run)"
-	desc = "Running Man."
-	datatype = DNA2_BUF_SE
-	value = 0xFFF
-	forcedmutation = TRUE
-
-/obj/item/dnainjector/runfast/Initialize()
-	block = GLOB.increaserunblock
-	..()
-
-/obj/item/dnainjector/antirunfast
-	name = "DNA-Injector (Anti-Increase Run)"
-	desc = "Walking Man."
-	datatype = DNA2_BUF_SE
-	value = 0x001
-	forcedmutation = TRUE
-
-/obj/item/dnainjector/antirunfast/Initialize()
-	block = GLOB.increaserunblock
-	..()
-
 /obj/item/dnainjector/morph
 	name = "DNA-Injector (Morph)"
 	desc = "A total makeover."