rootston: remove mostly unused mapped icon param

include/rootston/input.h

@@ -67,7 +67,6 @@ struct roots_input_event {
 struct roots_drag_icon {
 	struct wlr_surface *surface;
 	struct wl_list link; // roots_input::drag_icons
-	bool mapped;
 
 	int32_t sx;
 	int32_t sy;

rootston/cursor.c

@@ -374,8 +374,6 @@ static void handle_drag_icon_commit(struct wl_listener *listener, void *data) {
 	// toolkits to see how we should interpret the surface state here.
 	drag_icon->sx += drag_icon->surface->current->sx;
 	drag_icon->sy += drag_icon->surface->current->sy;
-
-	drag_icon->mapped = drag_icon->surface->texture->valid;
 }
 
 static void handle_pointer_grab_begin(struct wl_listener *listener,

rootston/output.c

@@ -152,10 +152,6 @@ static void output_frame_notify(struct wl_listener *listener, void *data) {
 
 	struct roots_drag_icon *drag_icon = NULL;
 	wl_list_for_each(drag_icon, &server->input->drag_icons, link) {
-		if (!drag_icon->mapped) {
-			continue;
-		}
-
 		struct wlr_surface *icon = drag_icon->surface;
 		struct wlr_cursor *cursor = server->input->cursor;
 		double icon_x = cursor->x + drag_icon->sx;