Disable addons which haven't been updated

Gave noisy warnings on startup.

source/blender/blenloader/intern/versioning_defaults.c

@@ -44,6 +44,7 @@
 #include "DNA_object_types.h"
 #include "DNA_workspace_types.h"
 
+#include "BKE_addon.h"
 #include "BKE_brush.h"
 #include "BKE_library.h"
 #include "BKE_main.h"
@@ -95,6 +96,24 @@ void BLO_update_defaults_userpref_blend(void)
 	U.flag &= ~USER_SCRIPT_AUTOEXEC_DISABLE;
 #endif
 
+	/* XXX, until these are working w/ 2.8x. */
+	{
+		const char *addon_id_remove[] = {
+			"io_anim_bvh",
+			"io_curve_svg",
+			"io_mesh_ply",
+			"io_mesh_stl",
+			"io_mesh_uv_layout",
+			"io_scene_3ds",
+			"io_scene_fbx",
+			"io_scene_obj",
+			"io_scene_x3d",
+		};
+		for (int i = 0; i < ARRAY_SIZE(addon_id_remove); i++) {
+			BKE_addon_remove_safe(&U.addons, addon_id_remove[i]);
+		}
+	}
+
 	/* Ignore the theme saved in the blend file,
 	 * instead use the theme from 'userdef_default_theme.c' */
 	{