remove unnecessary code

src/server/views/modal/rename.html

@@ -16,7 +16,6 @@
           <div class="form-group">
             <label for="newPageName">{{ t('modal_rename.label.New page name') }}</label><br>
             <div class="input-group">
-              <span class="input-group-addon">{{ config.crowi['app:siteUrl:fixed'] }}</span>
               <span class="input-group-addon">{{ baseUrl }}</span>
               {% if searchConfigured() %}
               <div id="rename-page-name-input" class="page-name-input"></div>