Unfortunately, the Audio Restoration Effects inside of either PrE, or PrPro, are limited. For the removal of Audio noise, I go with an audio-editor, as it will have many more useful tools. Audacity is a freeware audio-editor, and works well. Be sure to read the full instructions on setting it up to use VST's for it. I also believe that the Audacity site has several VST add-ons, that there are hundreds on the Internet - some free and some for pay.
Good luck,
Hunt
