Removes unused Xeno stuff

code/__defines/mobs.dm

@@ -13,7 +13,6 @@
 #define GODMODE     0x1000
 #define FAKEDEATH   0x2000  // Replaces stuff like changeling.changeling_fakedeath.
 #define DISFIGURED  0x4000  // Set but never checked. Remove this sometime and replace occurences with the appropriate organ code
-#define XENO_HOST   0x8000  // Tracks whether we're gonna be a baby alien's mummy.
 
 // Grab levels.
 #define GRAB_PASSIVE    1

code/game/mecha/medical/odysseus.dm

@@ -101,8 +101,6 @@
 			holder = patient.hud_list[STATUS_HUD]
 			if(patient.stat == 2)
 				holder.icon_state = "huddead"
-			else if(patient.status_flags & XENO_HOST)
-				holder.icon_state = "hudxeno"
 			else if(foundVirus)
 				holder.icon_state = "hudill"
 			else if(patient.has_brain_worms())

code/modules/mob/living/carbon/human/life.dm

@@ -1584,9 +1584,6 @@
 		if(stat == DEAD)
 			holder.icon_state = "huddead"
 			holder2.icon_state = "huddead"
-		else if(status_flags & XENO_HOST)
-			holder.icon_state = "hudxeno"
-			holder2.icon_state = "hudxeno"
 		else if(foundVirus)
 			holder.icon_state = "hudill"
 		else if(has_brain_worms())