Removed 'center' class from bugnote edit page textarea

Fixes #22548

Signed-off-by: Damien Regad <dregad@mantisbt.org>

bugnote_edit_page.php

@@ -129,7 +129,7 @@
 <div class="table-responsive">
 <table class="table table-bordered table-condensed table-striped">
 <tr>
-	<td class="center" colspan="2">
+	<td colspan="2">
 		<textarea class="form-control <?php echo $t_bugnote_class; ?>" cols="80" rows="10" name="bugnote_text"
 		id="bugnote_text"><?php echo $t_bugnote_text ?></textarea>
 	</td>