disables air alarm sounds (#5987)

they're obnoxious, see reasoning in files changed.

code/modules/atmospherics/machinery/air_alarm.dm

@@ -180,13 +180,17 @@ GLOBAL_LIST_EMPTY(air_alarms)
 /obj/machinery/air_alarm/proc/handle_sounds()
 	if(!report_danger_level)
 		return
+	// todo: this needs to be a soundloop datum that adjusts volume based on if the user's been hearing it, because constant alarm whine is obnoxious
+	// disabled for now ~silicons
+/*
 	if(world.time > last_sound_played + (60 SECONDS / (danger_level ? danger_level : 1)))
 		if (danger_level == AIR_ALARM_RAISE_WARNING)
 			playsound(src,'sound/machines/air_alarm/warning.ogg', 100, pressure_affected = TRUE)
 			last_sound_played = world.time
 		if (danger_level == AIR_ALARM_RAISE_DANGER)
 			playsound(src, 'sound/machines/air_alarm/danger.ogg', 100, pressure_affected = FALSE)
 			last_sound_played = world.time
+*/
 
 /obj/machinery/air_alarm/proc/handle_heating_cooling(var/datum/gas_mixture/environment)
 	var/list/tlv = tlv_temperature