We were still using this but it's not defined in the UI xml.
Fixes: https://gitlab.gnome.org/GNOME/gtk/issues/2295
GtkWidget *vulkan_gsk;
GtkWidget *shaders;
GtkWidget *surface;
- GtkWidget *fallback;
GtkWidget *glyphcache;
GtkWidget *actions;
update_flag (logs->priv->vulkan_gsk, &flags, GSK_DEBUG_VULKAN);
update_flag (logs->priv->shaders, &flags, GSK_DEBUG_SHADERS);
update_flag (logs->priv->surface, &flags, GSK_DEBUG_SURFACE);
- update_flag (logs->priv->fallback, &flags, GSK_DEBUG_FALLBACK);
update_flag (logs->priv->glyphcache, &flags, GSK_DEBUG_GLYPH_CACHE);
gsk_set_debug_flags (flags);