remove duplicate method definitions

Author: tomsisk

src/Contracts/Authenticatable.php

@@ -6,27 +6,6 @@
 
 interface Authenticatable extends BaseAuthenticatable
 {
-    /**
-     * Get the name of the unique identifier for the user.
-     *
-     * @return string
-     */
-    public function getAuthIdentifierName();
-
-    /**
-     * Get the unique identifier for the user.
-     *
-     * @return mixed
-     */
-    public function getAuthIdentifier();
-
-    /**
-     * Get the password for the user.
-     *
-     * @return string
-     */
-    public function getAuthPassword();
-
     /**
      * Get the "remember me" session tokens for the user.
      *