admin_manage_user.html: 不再需要，所以删除.

app/templates/admin_manage_user.html

@@ -93,12 +93,4 @@
     }
 </script>
 
-<script>
-    // Give the user another 365 days
-    const date = new Date();
-    date.setDate(date.getDate() + 365);
-    document.getElementById("expiry_date").value = date.toISOString().split('T')[0];
-</script>
-
-
 </html>