Simplify and cleanup IPC/defib revival after messy fixes

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

@@ -330,13 +330,10 @@
 							user.visible_message("<span class='boldnotice'>[defib] pings: Resuscitation successful.</span>")
 							playsound(get_turf(src), 'sound/machines/ping.ogg', 50, 0)
 							H.stat = 1
-							if(H in dead_mob_list)
-								dead_mob_list -= H
-								living_mob_list += H
+							H.revive()
 							H.emote("gasp")
 							if(tplus > tloss)
 								H.setBrainLoss( max(0, min(99, ((tlimit - tplus) / tlimit * 100))))
-							H.updatehealth()
 							defib.deductcharge(revivecost)
 							add_logs(user, M, "revived", object="defibrillator")
 						else