[MIRROR] Removes some simple sleeps (#11527)

Co-authored-by: Cameron Lennox <killer65311@gmail.com>

code/game/gamemodes/technomancer/core_obj.dm

@@ -123,8 +123,7 @@
 				spawn(1)
 					L.visible_message(span_infoplain(span_bold("\The [L]") + " begins to fade away..."))
 					animate(L, alpha = 255, alpha = 0, time = 30) // Makes them fade into nothingness.
-					sleep(30)
-					qdel(L)
+					QDEL_IN(L, 30)
 
 // Deletes all the summons and wards from the core, so that Destroy() won't have issues.
 /obj/item/technomancer_core/proc/dismiss_all_summons()

code/game/gamemodes/technomancer/spells/targeting_matrix.dm

@@ -32,5 +32,4 @@
 
 			var/image/target_image = image(icon = 'icons/obj/spells.dmi', loc = get_turf(chosen_target), icon_state = "target")
 			user << target_image
-			sleep(5)
-			qdel(target_image)
+			QDEL_IN(target_image, 5)