don't log a uuid of the username portion of basic auth info

Author: dgrove-oss

core/controller/src/main/scala/org/apache/openwhisk/core/controller/BasicAuthenticationDirective.scala

@@ -39,7 +39,6 @@ object BasicAuthenticationDirective extends AuthenticationDirectiveProvider {
       Try {
         // authkey deserialization is wrapped in a try to guard against malformed values
         val authkey = BasicAuthenticationAuthKey(UUID(pw.username), Secret(pw.password))
-        logging.info(this, s"authenticate: ${authkey.uuid}")
         val future = Identity.get(authStore, authkey) map { result =>
           if (authkey == result.authkey) {
             logging.debug(this, s"authentication valid")