tests: clean up bad extension
The presence of the "babar" extension breaks subsequent tests.
So delete the file and create an empty one to return the config
to sanity.
--- a/tests/test-check-py3-commands.t Mon Mar 13 18:16:42 2017 -0700
+++ b/tests/test-check-py3-commands.t Mon Mar 13 13:08:11 2017 -0700
@@ -65,6 +65,9 @@
*** failed to import extension babar from imaginary_elephant: *: 'imaginary_elephant' (glob)
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ $ rm included-hgrc
+ $ touch included-hgrc
+
Test bytes-ness of policy.policy with HGMODULEPOLICY
$ HGMODULEPOLICY=py