Issue #3351698: Typehint for TfaBasePlugin $alreadyAccepted should be bool

src/Plugin/TfaValidation/TfaHotpValidation.php

@@ -66,13 +66,6 @@ class TfaHotpValidation extends TfaBasePlugin implements TfaValidationInterface,
    */
   protected $issuer;
 
-  /**
-   * Whether the code has already been used or not.
-   *
-   * @var bool
-   */
-  protected $alreadyAccepted;
-
   /**
    * The Datetime service.
    *