compositor: Remove a few legacy uses of wl_object

src/screenshooter.c

@@ -36,7 +36,6 @@
 #include "../wcap/wcap-decode.h"
 
 struct screenshooter {
-	struct wl_object base;
 	struct weston_compositor *ec;
 	struct wl_global *global;
 	struct wl_client *client;
@@ -570,9 +569,6 @@ screenshooter_create(struct weston_compositor *ec)
 	if (shooter == NULL)
 		return;
 
-	shooter->base.interface = &screenshooter_interface;
-	shooter->base.implementation =
-		(void(**)(void)) &screenshooter_implementation;
 	shooter->ec = ec;
 	shooter->client = NULL;
 

src/zoom.c

@@ -28,7 +28,6 @@
 #include "text-cursor-position-server-protocol.h"
 
 struct text_cursor_position {
-	struct wl_object base;
 	struct weston_compositor *ec;
 	struct wl_global *global;
 	struct wl_listener destroy_listener;
@@ -77,9 +76,6 @@ text_cursor_position_notifier_create(struct weston_compositor *ec)
 	if (text_cursor_position == NULL)
 		return;
 
-	text_cursor_position->base.interface = &text_cursor_position_interface;
-	text_cursor_position->base.implementation =
-		(void(**)(void)) &text_cursor_position_implementation;
 	text_cursor_position->ec = ec;
 
 	text_cursor_position->global = wl_display_add_global(ec->wl_display,