Revert bind as user option.

Author: stevebauman

src/AdldapAuthUserProvider.php

@@ -120,7 +120,7 @@ protected function discoverAdldapFromModel($model)
      */
     protected function authenticate($username, $password)
     {
-        return $this->getAdldap()->auth()->attempt($username, $password, $this->getBindAsUser());
+        return $this->getAdldap()->auth()->attempt($username, $password);
     }
 
     /**
@@ -144,15 +144,4 @@ protected function getLoginFallback()
     {
         return Config::get('adldap_auth.login_fallback', false);
     }
-
-    /**
-     * Retrieves the Adldap bind as user option for binding
-     * as the authenticated user.
-     *
-     * @return bool
-     */
-    protected function getBindAsUser()
-    {
-        return Config::get('adldap_auth.bind_as_user', false);
-    }
 }