Xenos can no longer get viruses (#22395)

* Okay it works now maybe

* Oops this is the actual fix

* I am praying this went correctly

* Lewc review

code/modules/mob/living/carbon/alien/alien_base.dm

@@ -209,6 +209,9 @@
 /mob/living/carbon/alien/proc/deathrattle_message()
 	return "<i><span class='alien'>The hivemind echoes: [name] has been slain!</span></i>"
 
+/mob/living/carbon/alien/CanContractDisease(datum/disease/D)
+	return FALSE
+
 /*----------------------------------------
 Proc: AddInfectionImages()
 Des: Gives the client of the alien an image on each infected mob.

code/modules/mob/living/carbon/alien/humanoid/humanoid.dm

@@ -35,8 +35,6 @@
 
 	return 0
 
-///mob/living/carbon/alien/humanoid/bullet_act(obj/item/projectile/Proj) taken care of in living
-
 /mob/living/carbon/alien/humanoid/emp_act(severity)
 	if(r_store) r_store.emp_act(severity)
 	if(l_store) l_store.emp_act(severity)