drm/sun4i: tv: Remove useless destroy function

Our destroy implementation is just calling the generic helper, so let's
just remove our function and directly use the helper.
Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20220728-rpi-analog-tv-properties-v2-38-459522d653a7@cerno.tech

drivers/gpu/drm/sun4i/sun4i_tv.c

@@ -496,15 +496,9 @@ static const struct drm_connector_helper_funcs sun4i_tv_comp_connector_helper_fu
 	.get_modes	= sun4i_tv_comp_get_modes,
 };
 
-static void
-sun4i_tv_comp_connector_destroy(struct drm_connector *connector)
-{
-	drm_connector_cleanup(connector);
-}
-
 static const struct drm_connector_funcs sun4i_tv_comp_connector_funcs = {
 	.fill_modes		= drm_helper_probe_single_connector_modes,
-	.destroy		= sun4i_tv_comp_connector_destroy,
+	.destroy		= drm_connector_cleanup,
 	.reset			= drm_atomic_helper_connector_reset,
 	.atomic_duplicate_state	= drm_atomic_helper_connector_duplicate_state,
 	.atomic_destroy_state	= drm_atomic_helper_connector_destroy_state,