Removed bounding box from annotation import pdf notebook

Author: ovalle15

examples/annotation_import/pdf.ipynb

@@ -192,16 +192,6 @@
       "metadata": {},
       "source": [
         "############ Bounding Box ###########\n",
-        "# Python Annotation \n",
-        "bbox_annotation = lb_types.ObjectAnnotation(\n",
-        "  name = \"bounding_box\",  # must match your ontology feature's name\n",
-        "  value = lb_types.Rectangle(\n",
-        "        start=lb_types.Point(x=42.799, y=86.498), # Top left\n",
-        "        end=lb_types.Point(x=141.911, y=303.195), # Bottom right\n",
-        "    ),\n",
-        "  page = 1,\n",
-        "  unit=\"POINTS\"\n",
-        ")\n",
         "\n",
         "bbox_annotation_ndjson = {\n",
         "  'name': 'bounding_box',\n",