fix(blood): Modifies remove_reagent calls to remove_blood calls

Fixes https://github.com/VOREStation/VOREStation/issues/14817

remove_reagent has no sanitization for making sure the person has at least 1 u of blood remaining, and is therefore unsafe to use.

This commit changes all human remove_reagent("blood", amt) calls with remove_blood(amt).

This should prevent blood disappearing from internal bleeding or dragging someone while they're down or from drawing blood from them and so forth.

Not all cases of remove_reagent("blood", amt) were changed, as some act on organs or other reagent containers not part of a human mob or because it's set_species

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

@@ -1261,7 +1261,7 @@
 			vessel.maximum_volume = species.blood_volume
 			vessel.add_reagent("blood", species.blood_volume - vessel.total_volume)
 		else if(vessel.total_volume > species.blood_volume)
-			vessel.remove_reagent("blood", vessel.total_volume - species.blood_volume)
+			vessel.remove_reagent("blood",vessel.total_volume - species.blood_volume) //This one should stay remove_reagent to work even lack of a O_heart
 			vessel.maximum_volume = species.blood_volume
 		fixblood()
 		species.update_attack_types() //VOREStation Edit - Required for any trait that updates unarmed_types in setup.
@@ -1731,7 +1731,7 @@
 			if(blood_volume < species?.blood_volume*species?.blood_level_fatal)
 				bloodtrail = 0	//Most of it's gone already, just leave it be
 			else
-				vessel.remove_reagent("blood", 1)
+				remove_blood(1)
 		if(bloodtrail)
 			if(istype(loc, /turf/simulated))
 				var/turf/T = loc

code/modules/mob/living/simple_mob/subtypes/animal/sif/leech.dm

@@ -183,7 +183,7 @@
 
 		if(!docile && ishuman(host) && chemicals < max_chemicals)
 			var/mob/living/carbon/human/H = host
-			H.vessel.remove_reagent("blood", 1)
+			H.remove_blood(1)
 			if(!H.reagents.has_reagent("inaprovaline"))
 				H.reagents.add_reagent("inaprovaline", 1)
 			chemicals += 2