This removes:

* Python 3 variants (VARIANT:=python3)

* "for Python3" from package titles

* Package selection condition from package dependencies, e.g.
  +PACKAGE_python3-six:python3-light replaced with +python3-light

* "Default" package information sections, e.g.
  Package/python-six/Default removed and package details merged into
  Package/python3-six

* "(Variant for Python3)" from package descriptions

Signed-off-by: Jeffery To <jeffery.to@gmail.com>

Signed-off-by: Peter Stadler <peter.stadler@student.uibk.ac.at>

This is a dependency for django-cors-headers.

Install sqlformat without using pkg-resources:
Upstream uses the entry_point function to call the __main__.py script.
We copy it for avoiding the dependency on pkg_resources and full python3 in turn.

Signed-off-by: Peter Stadler <peter.stadler@student.uibk.ac.at>