fixup tmux docs

source/notes/tmux.rst

@@ -19,24 +19,10 @@ Copy powerline config files to a locally editable place
 .. code-block:: shell
 
    mkdir -p ~/.config/powerline
-   cp -r ~/.local/lib/python3.8/site-packages/powerline/config_files/* ~/.config/powerline
+   cp -r /usr/lib/python3.9/site-packages/powerline/config_files/* ~/.config/powerline
 
 Now you can edit `~/.config/powerline/themes/tmux/default.json` to customize your tmux status bar.  For example I don't want to see the system uptime or load in the status bar so I remove the `sys.uptime` and `sys.system_load` blocks.
 
-Since we installed powerline with ``pip3 install --user`` we'll need to add ${HOME}/.local/bin to the PATH environment variable:
-
-For zsh:
-
-.. code-block:: shell
-
-   echo "PATH=\${HOME}/.local/bin:\${PATH}" >> ~/.zshrc
-
-For bash:
-
-.. code-block:: shell
-
-   echo "PATH=\${HOME}/.local/bin:\${PATH}" >> ~/.bashrc
-
 Powerline fonts
 ---------------