Removes breath fog particle (#3873)

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## About The Pull Request
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nonstandard species
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## Changelog

:cl:
del: Removed breath fog particle effect
/:cl:

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code/game/objects/effects/particles/smoke.dm

@@ -68,12 +68,3 @@
 /particles/fog
 	icon = 'icons/effects/particles/smoke.dmi'
 	icon_state = list("chill_1" = 2, "chill_2" = 2, "chill_3" = 1)
-
-/particles/fog/breath
-	count = 1
-	spawning = 1
-	lifespan = 1 SECONDS
-	fade = 0.5 SECONDS
-	grow = 0.05
-	spin = 2
-	color = "#fcffffff"

code/modules/surgery/organs/lungs.dm

@@ -495,7 +495,6 @@
 				// Even though breathing via internals TECHNICALLY exhales into the environment, we'll still block it
 				if(breather.internal)
 					return
-				emit_breath_particle(breather, /particles/fog/breath, part_count)
 
 	if(!HAS_TRAIT(breather, TRAIT_RESISTHEAT)) // HEAT DAMAGE
 		var/heat_modifier = breather.dna.species.heatmod