Remove obsolete reference to old embedding engines

examples/Code_search.ipynb

@@ -84,13 +84,6 @@
     "print(\"Total number of functions extracted:\", len(all_funcs))"
    ]
   },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "For code search models we use code-search-{model}-code to obtain embeddings for code snippets, and code-search-{model}-text to embed natural language queries."
-   ]
-  },
   {
    "cell_type": "code",
    "execution_count": 2,