deleting retention rule as a top level resource files

Author: govindrao55

website/docs/d/objectstorage_retention_rule.html.markdown

@@ -1900,9 +1900,6 @@
                         <li>
                             <a href="/docs/providers/oci/d/objectstorage_replication_sources.html">oci_objectstorage_replication_sources</a>
                         </li>
-                        <li>
-                            <a href="/docs/providers/oci/d/objectstorage_retention_rule.html">oci_objectstorage_retention_rule</a>
-                        </li>
                     </ul>
                 </li>
                 <li<%= sidebar_current("docs-oci-object_storage-resources") %>>
@@ -1920,9 +1917,6 @@
                         <li>
                             <a href="/docs/providers/oci/r/objectstorage_preauthrequest.html">oci_objectstorage_preauthrequest</a>
                         </li>
-                        <li>
-                            <a href="/docs/providers/oci/r/objectstorage_retention_rule.html">oci_objectstorage_retention_rule</a>
-                        </li>
                         <li>
                             <a href="/docs/providers/oci/r/objectstorage_replication_policy.html">oci_objectstorage_replication_policy</a>
                         </li>