Removes some additional waitfors and backgrounds (#18870)

Removes some additional waitfors and backgrounds, mark the relative
procs as should not sleep

---------

Co-authored-by: FluffyGhost <FluffyGhost>

code/modules/admin/admin_ranks.dm

@@ -168,8 +168,6 @@ var/list/forum_groupids_to_ranks = list()
 		world.SetConfig("APP/admin", A, null)
 
 /proc/update_admins_from_api(reload_once_done=FALSE)
-	set background = TRUE
-
 	if (!establish_db_connection(GLOB.dbcon))
 		log_and_message_admins("AdminRanks: Failed to connect to database in update_admins_from_api(). Carrying on with old staff lists.")
 		return FALSE

code/modules/admin/verbs/atmosdebug.dm

@@ -1,7 +1,6 @@
 /client/proc/atmosscan()
 	set category = "Mapping"
 	set name = "Check Piping"
-	set background = 1
 	if(!src.holder)
 		to_chat(src, "Only administrators may use this command.")
 		return