Issue #3457382: Removed re-listing of whitelisted IPs.

Closes #3457382

src/FloodWhiteList.php

@@ -52,6 +52,10 @@ class FloodWhiteList implements FloodInterface {
    * {@inheritdoc}
    */
   public function register($name, $window = 3600, $identifier = NULL) {
+    if ($this->isIpWhitelisted()) {
+      return;
+    }
+
     return $this->flood->register($name, $window, $identifier);
   }