package/python-pyqt: remove package

The python-pyqt package uses the obsolete qt4 package, which we are about to
remove, so remove python-pyqt as well.

CC: Gwenhael Goavec-Merou <gwenhael.goavec-merou@trabucayre.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>