Remove unnecessary comment from openai.py

The outdated comment that referred to installing the 'docstring-parser' package was removed from the 'openai.py' file. The comment was no longer needed as the package is already installed during setup.

Author: dusvyat

mindsdb_sdk/utils/openai.py

@@ -49,7 +49,6 @@ def make_openai_tool(function: callable, description: str = None) -> dict:
 
     :return: dictionary containing function metadata
     """
-    # You will need to pip install docstring-parser to use this function
 
     import inspect
     import docstring_parser