Removing unnecessary `__init__.py` file

Unclear why this was added in the first place. It does not reside in a
Python package.
Make empty package a module instead

Feels more natural. Change it to a package when there actually are
modules residing in it (apart from `__init__.py`, that is).
Merge pull request #36 from JensRantil/empty-package-to-module

Make empty package a module instead
Merge pull request #37 from JensRantil/remove-unnecessary-file

Removing unnecessary `__init__.py` file