Remove unfubar_setuptools

It is no longer used for anything, nor does it seem to be
needed in the modern world of get-pip.py.

Change-Id: I5554514dd862a2004454daf295abbcf9cf9f2bfb
Merge "Remove unfubar_setuptools"
Fixes some typos in stack.sh

Change-Id: Ia627d1793c6db76590844d51854dce35a87206b7
Signed-off-by: Gael Chamoulaud <gchamoul@redhat.com>