/opt/boxen/homebrew/share/python not needed in PATH

[sporkd]

When I run brew doctor I get this:

Warning: /opt/boxen/homebrew/share/python is not needed in PATH.
Formerly homebrew put Python scripts you installed via `pip` or `pip3`
(or `easy_install`) into that directory above but now it can be removed
from your PATH variable.
Python scripts will now install into /opt/boxen/homebrew/bin.
You can delete anything, except 'Extras', from the /opt/boxen/homebrew/share/python
(and /opt/boxen/homebrew/share/python3) dir and install affected Python packages
anew with `pip install --upgrade`.

This commit 3feeb34 seems to remove python.sh but then adds it back in again. However, it seems python.sh should be empty for now.