Comment out uninstall-local for python

This uninstall-local rule is too strong; it could delete unexpected
files, although they are likely nghttp2 related.

python/Makefile.am

@@ -35,8 +35,8 @@ all-local: nghttp2.c
 install-exec-local:
 	$(PYTHON) setup.py install --prefix=$(DESTDIR)$(prefix)
 
-uninstall-local:
-	rm -rf $(DESTDIR)$(libdir)/python*/site-packages/*nghttp2*
+# uninstall-local:
+# 	rm -rf $(DESTDIR)$(libdir)/python*/site-packages/*nghttp2*
 
 clean-local:
 	$(PYTHON) setup.py clean --all