Fix missing resource

Author: 4ian

examples/starting-3d-point-and-click-adventure/starting-3d-point-and-click-adventure.json

@@ -208,13 +208,6 @@
         "name": "assets\\starting_unit_green.glb",
         "userAdded": false
       },
-      {
-        "file": "assets/grass_3_blades.glb",
-        "kind": "model3D",
-        "metadata": "",
-        "name": "assets\\grass_3_blades.glb",
-        "userAdded": false
-      },
       {
         "file": "assets/grass_multiple_blades.glb",
         "kind": "model3D",