Unit Tests

- Removed mention of synch.key from all unit tests.  This is an obsolete file.

test/history.monthly.t

@@ -68,12 +68,11 @@ like ($output, qr/2\s+3\s+3\s+-4/, 'history.monthly - this month');
 like ($output, qr/4\s+2\s+1\s+1/, 'history.monthly - average');
 
 # Cleanup.
-unlink qw(pending.data completed.data undo.data backlog.data synch.key time.rc);
+unlink qw(pending.data completed.data undo.data backlog.data time.rc);
 ok (! -r 'pending.data'   &&
     ! -r 'completed.data' &&
     ! -r 'undo.data'      &&
     ! -r 'backlog.data'   &&
-    ! -r 'synch.key'      &&
     ! -r 'time.rc', 'Cleanup');
 
 exit 0;