Client says if it is confidential instead of repository

src/Grant/AuthCodeGrant.php

@@ -79,16 +79,11 @@ class AuthCodeGrant extends AbstractAuthorizeGrant
             throw OAuthServerException::invalidRequest('client_id');
         }
 
+        $client = $this->clientRepository->getClientEntity($clientId);
+
         // Only validate the client if it is confidential
-        if ($this->clientRepository->isClientConfidential($clientId)) {
+        if ($client->isConfidential()) {
             $client = $this->validateClient($request);
-        } else {
-            $client = $this->clientRepository->getClientEntity(
-                $clientId,
-                $this->getIdentifier(),
-                null,
-                false
-            );
         }
 
         $encryptedAuthCode = $this->getRequestParameter('code', $request, null);

src/Repositories/ClientRepositoryInterface.php

@@ -25,15 +25,6 @@ interface ClientRepositoryInterface extends RepositoryInterface
      */
     public function getClientEntity($clientIdentifier);
 
-    /**
-     * Check if a client is confidential.
-     *
-     * @param string $clientIdentifier The client's identifier
-     *
-     * @return bool
-     */
-    public function isClientConfidential($clientIdentifier);
-
     /**
      * Validate a client's secret.
      *