Thanks for sharing the mod. Just to add my twist to it (for my V4.4.5 cart), I altered the last line of code so that the USPS's <sup> tags are removed from the displayed shipping text. This shortens the text and looks better too.
Code is as follows:
Code:
<td nowrap="nowrap">{$orders[oid].shipping|regex_replace:"/\<|\>|sup|\/|\(.*\)|#.*#/":""}</td>