Remove Python module (moved to separate repository)

The Python module has moved to
https://github.com/jonls/python-qsoptex. It became apparent that
building the Python module as part of the library build system
does not play well with many package managers. Moving it to a
separate repository and package should make it easier to package
for various distributions, for PyPI, etc.
Remove Python dependency from Travis CI script
contrib: Update build scripts to remove Python dependency
Merge pull request #10 from jonls/remove-python

Remove Python module (moved to separate repository)