Remove unused python files

We split out libvirt-python ages ago

debian/python-libvirt.install

-usr/lib/python*/*/*.so
-usr/lib/python*/*/*.py

debian/python.mk

-# Build python modules for all known python versions
-
-include /usr/share/python/python.mk
-ifeq (,$(py_sitename))
-  py_libdir_sh = $$(_py_=$(strip $(1)); python$${_py_\#python*} -c 'from distutils import sysconfig; print(sysconfig.get_python_lib())')
-endif
-
-PY_DIR := $(DEB_BUILDDIR)/python
-PYDEFAULTVER := $(shell pyversions --version --default)
-PYVERSIONS := $(shell pyversions --version --installed)
-
-otherpy = \
-	set -e; for v in $(PYVERSIONS); do \
-		$(RM) $(PY_DIR); \
-		ln -sf $(PY_DIR)$$v $(PY_DIR); \
-		$(MAKE) \
-			-C $(PY_DIR) \
-			pyexecdir=$(call py_libdir_sh, $$v) \
-			PYTHON=python$$v \
-			PYTHON_VERSION=$$v \
-			PYTHON_INCLUDES=-I/usr/include/python$$v \
-			$1; \
-		$(RM) $(PY_DIR); \
-	done; \
-	ln -sf $(PY_DIR)$(PYDEFAULTVER) $(PY_DIR)
-
-configure::
-	set -e; for v in $(PYVERSIONS); do \
-		cp -la $(PY_DIR) $(PY_DIR)$$v; \
-	done
-	$(RM) -r $(PY_DIR)
-	ln -sf $(PY_DIR)$(PYDEFAULTVER) $(PY_DIR)
-
-build::
-	$(call otherpy, all)
-
-install::
-	$(call otherpy, install DESTDIR=$(CURDIR)/debian/tmp)