Fix race between script delay and turn_off (#16923)

homeassistant/helpers/script.py

@@ -95,7 +95,7 @@ class Script():
                 def async_script_delay(now):
                     """Handle delay."""
                     # pylint: disable=cell-var-from-loop
-                    self._async_listener.remove(unsub)
+                    self._async_remove_listener()
                     self.hass.async_create_task(
                         self.async_run(variables, context))
 
@@ -240,7 +240,7 @@ class Script():
         @callback
         def async_script_timeout(now):
             """Call after timeout is retrieve."""
-            self._async_listener.remove(unsub)
+            self._async_remove_listener()
 
             # Check if we want to continue to execute
             # the script after the timeout