fix for test to handle new bit_fmt with no brackets

testsuite/expect/test1.15

@@ -62,7 +62,7 @@ expect {
 		incr matches
 		exp_continue
 	}
-	-re "tasks \\\[0,2-9\\\]: running" {
+	-re "tasks 0,2-9: running" {
 		incr matches
 		exp_continue
 	}