tools: k3_gen_x509_cert: Do not print SWRV on build

This matches the others here.

Signed-off-by: Andrew Davis <afd@ti.com>
diff --git a/tools/k3_gen_x509_cert.sh b/tools/k3_gen_x509_cert.sh
index 029247c..d9cde07 100755
--- a/tools/k3_gen_x509_cert.sh
+++ b/tools/k3_gen_x509_cert.sh
@@ -238,7 +238,7 @@
 	#echo "	IMAGE_SIZE = $BIN_SIZE"
 	#echo "	CERT_TYPE = $CERTTYPE"
 	#echo "	DEBUG_TYPE = $DEBUG_TYPE"
-	echo " SWRV = $SWRV"
+	#echo " SWRV = $SWRV"
 	sed -e "s/TEST_IMAGE_LENGTH/$BIN_SIZE/"	\
 		-e "s/TEST_IMAGE_SHA_VAL/$SHA_VAL/" \
 		-e "s/TEST_CERT_TYPE/$CERTTYPE/" \