Remove findAcls since it needs the next phpstan major

Author: VincentLanglet

stubs/Component/Security/Acl/Model/MutableAclProviderInterface.stub

@@ -13,12 +13,4 @@ interface MutableAclProviderInterface extends AclProviderInterface
 	 */
 	public function findAcl(ObjectIdentityInterface $oid, array $sids = []);
 
-	/**
-	 * @param array<mixed> $oids
-	 * @param array<mixed> $sids
-	 *
-	 * @return \SplObjectStorage<ObjectIdentityInterface, MutableAclInterface>
-	 */
-	public function findAcls(array $oids, array $sids = []);
-
 }