libweston: unexport weston_compositor_add_output()

Only used by weston_output_enable().

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Armin Krezović <krezovic.armin@gmail.com>

libweston/compositor.c

@@ -4474,7 +4474,7 @@ weston_output_move(struct weston_output *output, int x, int y)
  *
  * \internal
  */
-WL_EXPORT void
+static void
 weston_compositor_add_output(struct weston_compositor *compositor,
                              struct weston_output *output)
 {

libweston/compositor.h

@@ -1718,9 +1718,6 @@ weston_output_update_matrix(struct weston_output *output);
 void
 weston_output_move(struct weston_output *output, int x, int y);
 
-void
-weston_compositor_add_output(struct weston_compositor *compositor,
-                             struct weston_output *output);
 void
 weston_output_destroy(struct weston_output *output);
 void