[PATCH 1 of 2] tests: clean up blackbox test around aliases a little bit

[Augie Fackler]

# HG changeset patch
# User Augie Fackler <augie at google.com>
# Date 1505174812 14400
#      Mon Sep 11 20:06:52 2017 -0400
# Node ID 0878fba873527c814b1ad15d43e89adf62c11d37
# Parent  4f969b9e0cf5d4f2cfb7392cef7f43b74d17c5e4
tests: clean up blackbox test around aliases a little bit

diff --git a/tests/test-blackbox.t b/tests/test-blackbox.t
--- a/tests/test-blackbox.t
+++ b/tests/test-blackbox.t
@@ -21,13 +21,9 @@ command, exit codes, and duration
   1970/01/01 00:00:00 bob @0000000000000000000000000000000000000000+ (5000)> blackbox
 
 alias expansion is logged
+  $ rm ./.hg/blackbox.log
   $ hg confuse
   $ hg blackbox
-  1970/01/01 00:00:00 bob @0000000000000000000000000000000000000000 (5000)> init blackboxtest exited 0 after * seconds (glob)
-  1970/01/01 00:00:00 bob @0000000000000000000000000000000000000000 (5000)> add a
-  1970/01/01 00:00:00 bob @0000000000000000000000000000000000000000 (5000)> add a exited 0 after * seconds (glob)
-  1970/01/01 00:00:00 bob @0000000000000000000000000000000000000000+ (5000)> blackbox
-  1970/01/01 00:00:00 bob @0000000000000000000000000000000000000000+ (5000)> blackbox --config *blackbox.dirty=True* exited 0 after * seconds (glob)
   1970/01/01 00:00:00 bob @0000000000000000000000000000000000000000 (5000)> confuse
   1970/01/01 00:00:00 bob @0000000000000000000000000000000000000000 (5000)> alias 'confuse' expands to 'log --limit 3'
   1970/01/01 00:00:00 bob @0000000000000000000000000000000000000000 (5000)> confuse exited 0 after * seconds (glob)