perf: do not import util.queue
This was added by
af25237be091. But util.queue is not a module and is not
importable. I guess it wasn't noticed because of demandimport.
Differential Revision: https://phab.mercurial-scm.org/D1848
--- a/contrib/perf.py Wed Jan 10 19:08:51 2018 -0800
+++ b/contrib/perf.py Wed Jan 10 21:09:57 2018 -0800
@@ -27,7 +27,6 @@
import sys
import threading
import time
-import util.queue
from mercurial import (
changegroup,
cmdutil,