quieted approved site cleanup

Author: jricher

openid-connect-server/src/main/java/org/mitre/openid/connect/service/impl/DefaultApprovedSiteService.java

@@ -155,7 +155,7 @@ public void clearApprovedSitesForClient(ClientDetails client) {
 @Override
 public void clearExpiredSites() {
 
-logger.info("Clearing expired approved sites");
+logger.debug("Clearing expired approved sites");
 
 Collection<ApprovedSite> expiredSites = getExpired();
 if (expiredSites.size() > 0) {