be silent in the success case

bin/tests/system/dnssec/tests.sh

@@ -79,9 +79,6 @@ $DIG +tcp +noadd +nosea +nostat +noquest +nocmd -p 5300 \
 	a.bogus.example. @10.53.0.4 a > dig.out.ns4 || status=1
 grep "SERVFAIL" dig.out.ns4 > /dev/null || status=1
 
-echo "SERVFAIL is expected in the following:"
-grep ";" dig.out.ns4
-
 if [ $status != 0 ]; then
 	echo "R:FAIL"
 else