remove expires_at snippet property

Author: fbourigault

UPGRADE.md

@@ -22,3 +22,7 @@ Use the `deployKeys`, `deployKey`, `addDeployKey`, `deleteDeployKey`, `removeDep
 
 * The `keys`, `key`, `addKey`, `removeKey`, `disableKey` and `enableKey` methods have been removed.
 Use the `deployKeys`, `deployKey`, `addDeployKey`, `deleteDeployKey`, `removeDeployKey` and `enableDeployKey` instead.
+
+## `Gitlab\Model\Snippet` changes
+
+The `expires_at` property have been removed.`

lib/Gitlab/Model/Snippet.php

@@ -8,7 +8,6 @@
  * @property-read int $id
  * @property-read string $title
  * @property-read string $file_name
- * @property-read string $expires_at
  * @property-read string $updated_at
  * @property-read string $created_at
  * @property-read Project $project
@@ -24,7 +23,6 @@ class Snippet extends AbstractModel
         'title',
         'file_name',
         'author',
-        'expires_at',
         'updated_at',
         'created_at',
         'project'