bundlerepo: drop struct

mercurial/bundlerepo.py

@@ -13,7 +13,7 b' were part of the actual repository.'
 
 from node import nullid
 from i18n import _
-import os, struct, tempfile, shutil
+import os, tempfile, shutil
 import changegroup, util, mdiff, discovery
 import localrepo, changelog, manifest, filelog, revlog, error