Revert "i can't believe kevin made me code"

This reverts commit 7f38564838.

code/datums/datum.dm

@@ -49,11 +49,6 @@
 	/// A weak reference to another datum
 	var/datum/weakref/weak_reference
 
-//ambition port start
-	///Lazy associative list of currently active cooldowns.
-	var/list/cooldowns
-//ambition port end
-
 	/*
 	* Lazy associative list of currently active cooldowns.
 	*
@@ -266,11 +261,3 @@
 		return
 	SEND_SIGNAL(source, COMSIG_CD_RESET(index), S_TIMER_COOLDOWN_TIMELEFT(source, index))
 	TIMER_COOLDOWN_END(source, index)
-
-//ambition port start
-///Callback called by a timer to end an associative-list-indexed cooldown.
-/proc/end_cooldown(datum/source, index)
-	if(QDELETED(source))
-		return
-	COOLDOWN_END(source, index)
-//ambition port end