Removes a bunch of sleep(-1) and spawn(-1) from the code

This seems to be causing issues where if the queue was too long, byond would attempt to process through all of it while hanging everything else.

code/modules/admin/admin_ranks.dm

@@ -10,7 +10,7 @@ var/list/admin_ranks = list()								//list of all admin_rank datums
 	name = init_name
 	switch(name)
 		if("Removed",null,"")
-			spawn(-1)
+			spawn(0)
 				qdel(src)
 			throw EXCEPTION("invalid admin-rank name")
 			return

code/modules/admin/holder2.dm

@@ -16,12 +16,12 @@ var/list/admin_datums = list()
 
 /datum/admins/New(datum/admin_rank/R, ckey)
 	if(!ckey)
-		spawn(-1)
+		spawn(0)
 			del(src)
 		throw EXCEPTION("Admin datum created without a ckey")
 		return
 	if(!istype(R))
-		spawn(-1)
+		spawn(0)
 			del(src)
 		throw EXCEPTION("Admin datum created without a rank")
 		return