Update 06-SQLDB_QA.ipynb

Author: pablomarin

06-SQLDB_QA.ipynb

@@ -40,7 +40,6 @@
     "from langchain.agents import AgentExecutor\n",
     "from langchain.callbacks.manager import CallbackManager\n",
     "\n",
-    "from common.callbacks import MyCustomHandler\n",
     "from common.prompts import MSSQL_PROMPT, MSSQL_AGENT_PREFIX, MSSQL_AGENT_FORMAT_INSTRUCTIONS\n",
     "\n",
     "from IPython.display import Markdown, HTML, display  \n",