[Security] Remove isAuthenticated and setAuthenticated token methods in tests

Author: alamirault

Tests/Firewall/ContextListenerTest.php

@@ -563,15 +563,6 @@ public function getUserIdentifier(): string
         return $this->getUserIdentifier();
     }
 
-    public function isAuthenticated(): bool
-    {
-        return true;
-    }
-
-    public function setAuthenticated(bool $isAuthenticated)
-    {
-    }
-
     public function eraseCredentials(): void
     {
     }