delete-selection-mode compatiblity

tried binding <delete> to `smart-hungry-delete-forward-char` as
```
(global-set-key (kbd "<delete>") 'smart-hungry-delete-forward-char)
```
it works but kinda makes `(delete-selection-mode 1)` useless, one that replace the text in keystroke,
any suggestion how bind it to &lt;delete&gt;