Remove orphaned reference to Note 2

Author: nickfong

README.md

@@ -163,8 +163,6 @@ Use of a python `virtualenv` or a conda env is also recommended.
 
    or permanently by setting `c.Completer.use_jedi = False` in your
    [`ipython_config.py` file](https://ipython.readthedocs.io/en/stable/config/intro.html?highlight=ipython_config.py#systemwide-configuration).
-   You will also benefit from using experimental version of python-language-server
-   as described in the Note 2 (above).
 
 1. (Optional, Linux/OSX-only) to enable opening files outside of the root
    directory (the place where you start JupyterLab), create `.lsp_symlink` and