Update simple text retrieval demo

Signed-off-by: christy <[email protected]>

notebooks/text/imdb_search_milvus_client.ipynb

@@ -1289,22 +1289,10 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 1,
+   "execution_count": null,
    "id": "d0e81e68",
    "metadata": {},
-   "outputs": [
-    {
-     "ename": "NameError",
-     "evalue": "name 'default_server' is not defined",
-     "output_type": "error",
-     "traceback": [
-      "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
-      "\u001b[0;31mNameError\u001b[0m                                 Traceback (most recent call last)",
-      "\u001b[1;32m/Users/christybergman/Documents/milvus_bootcamp/bootcamp/notebooks/text/imdb_search_milvus_client.ipynb Cell 42\u001b[0m line \u001b[0;36m2\n\u001b[1;32m      <a href='vscode-notebook-cell:/Users/christybergman/Documents/milvus_bootcamp/bootcamp/notebooks/text/imdb_search_milvus_client.ipynb#X56sZmlsZQ%3D%3D?line=0'>1</a>\u001b[0m \u001b[39m# Shut down and cleanup the milvus server.\u001b[39;00m\n\u001b[0;32m----> <a href='vscode-notebook-cell:/Users/christybergman/Documents/milvus_bootcamp/bootcamp/notebooks/text/imdb_search_milvus_client.ipynb#X56sZmlsZQ%3D%3D?line=1'>2</a>\u001b[0m default_server\u001b[39m.\u001b[39mstop()\n\u001b[1;32m      <a href='vscode-notebook-cell:/Users/christybergman/Documents/milvus_bootcamp/bootcamp/notebooks/text/imdb_search_milvus_client.ipynb#X56sZmlsZQ%3D%3D?line=2'>3</a>\u001b[0m default_server\u001b[39m.\u001b[39mcleanup()\n",
-      "\u001b[0;31mNameError\u001b[0m: name 'default_server' is not defined"
-     ]
-    }
-   ],
+   "outputs": [],
    "source": [
     "# Shut down and cleanup the milvus server.\n",
     "default_server.stop()\n",