Error fix (#113)

* Error fix

Removed duplicate os.environ["OPENAI_API_KEY"] =

Moved imports above class definition to fix error that came from calling beofre importing.

* Update notebook.ipynb

---------

Co-authored-by: Kevin D Smith <kevin.smith@octobergray.com>

Author: bscolinos

notebooks/building-a-multi-agent-ai-app-with-autogen/notebook.ipynb

@@ -161,6 +161,20 @@
     {
       "cell_type": "code",
       "execution_count": 8,
+      "id": "e4291e67",
+      "metadata": {},
+      "outputs": [],
+      "source": [
+        "import autogen\n",
+        "from autogen.agentchat.contrib.retrieve_assistant_agent import RetrieveAssistantAgent\n",
+        "from autogen.agentchat.contrib.retrieve_user_proxy_agent import RetrieveUserProxyAgent\n",
+        "from autogen import config_list_from_json\n",
+        "from autogen import AssistantAgent"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": 9,
       "id": "96420b79-707a-491e-a027-dae10c47a7cd",
       "metadata": {},
       "outputs": [],
@@ -210,30 +224,15 @@
     },
     {
       "cell_type": "code",
-      "execution_count": 9,
+      "execution_count": 10,
       "id": "fdeff3db-e4bf-4f01-b6e0-6aad1986badc",
       "metadata": {},
       "outputs": [],
       "source": [
         "import os\n",
-        "os.environ[\"OPENAI_API_KEY\"] =\n",
         "os.environ[\"AUTOGEN_USE_DOCKER\"] = \"False\""
       ]
     },
-    {
-      "cell_type": "code",
-      "execution_count": 10,
-      "id": "c57ffc6b-4c78-4097-b917-69f9c3a745e7",
-      "metadata": {},
-      "outputs": [],
-      "source": [
-        "import autogen\n",
-        "from autogen.agentchat.contrib.retrieve_assistant_agent import RetrieveAssistantAgent\n",
-        "from autogen.agentchat.contrib.retrieve_user_proxy_agent import RetrieveUserProxyAgent\n",
-        "from autogen import config_list_from_json\n",
-        "from autogen import AssistantAgent"
-      ]
-    },
     {
       "cell_type": "code",
       "execution_count": 11,