lfs: drop unused import
A recent change dropped the last user of this module.
Differential Revision: https://phab.mercurial-scm.org/D4744
--- a/hgext/lfs/__init__.py Mon Sep 24 10:08:58 2018 -0700
+++ b/hgext/lfs/__init__.py Wed Sep 26 11:27:41 2018 -0700
@@ -137,7 +137,6 @@
extensions,
filelog,
filesetlang,
- hg,
localrepo,
minifileset,
node,