Wayland: Fixed storing a theme cursor which is never used in video data.

src/video/wayland/SDL_waylandvideo.c

@@ -253,7 +253,6 @@ display_handle_global(void *data, struct wl_registry *registry, uint32_t id,
     } else if (strcmp(interface, "wl_shm") == 0) {
         d->shm = wl_registry_bind(registry, id, &wl_shm_interface, 1);
         d->cursor_theme = WAYLAND_wl_cursor_theme_load(NULL, 32, d->shm);
-        d->default_cursor = WAYLAND_wl_cursor_theme_get_cursor(d->cursor_theme, "left_ptr");
 
 #ifdef SDL_VIDEO_DRIVER_WAYLAND_QT_TOUCH
     } else if (strcmp(interface, "qt_touch_extension") == 0) {

src/video/wayland/SDL_waylandvideo.h

@@ -42,7 +42,6 @@ typedef struct {
     struct wl_compositor *compositor;
     struct wl_shm *shm;
     struct wl_cursor_theme *cursor_theme;
-    struct wl_cursor *default_cursor;
     struct wl_pointer *pointer;
     struct wl_shell *shell;