pygrass: clean compilation layout _template

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@60448 15284696-431f-4ddb-bdfa-cd5b030d7da7

lib/python/pygrass/docs/Makefile

@@ -42,6 +42,7 @@ help:
 
 clean:
 	-rm -rf $(BUILDDIR)/*
+	-rm -f _templates/layout.html
 
 html:
 	$(call run_grass,$(SPHINXBUILD) -b html $(ALLSPHINXOPTS) $(BUILDDIR_HTML))