Proper mirror PR for the disease refactor because I fucked up the first one. (#2026)

* Revert "im a dumbass and didn't see the .rej files Revert "[MIRROR] Disease Refactor" (#2025)"

This reverts commit 44742cb115.

* Delete shuttle_loan.dm.rej

* Delete life.dm.rej

* Update life.dm

* Delete life.dm.rej

* compile

code/datums/diseases/brainrot.dm

@@ -9,7 +9,7 @@
 	viable_mobtypes = list(/mob/living/carbon/human)
 	cure_chance = 15//higher chance to cure, since two reagents are required
 	desc = "This disease destroys the braincells, causing brain fever, brain necrosis and general intoxication."
-	required_organs = list(/obj/item/bodypart/head)
+	required_organs = list(/obj/item/organ/brain)
 	severity = DANGEROUS
 
 /datum/disease/brainrot/stage_act() //Removed toxloss because damaging diseases are pretty horrible. Last round it killed the entire station because the cure didn't work -- Urist -ACTUALLY Removed rather than commented out, I don't see it returning - RR