remote-hg: trivial cleanups

Drop unused "global", and remove redundant comparison of two files.
Signed-off-by: NFelipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

contrib/remote-helpers/git-remote-hg

@@ -538,7 +538,7 @@ def list_head(repo, cur):
     g_head = (head, node)
 
 def do_list(parser):
-    global branches, bmarks, mode, track_branches
+    global branches, bmarks, track_branches
 
     repo = parser.repo
     for bmark, node in bookmarks.listbookmarks(repo).iteritems():

contrib/remote-helpers/test-hg-hg-git.sh

@@ -455,8 +455,6 @@ test_expect_success 'hg author' '
 		git_log gitrepo-$x > git-log-$x
 	done &&
 
-	test_cmp git-log-hg git-log-git &&
-
 	test_cmp hg-log-hg hg-log-git &&
 	test_cmp git-log-hg git-log-git
 '