Turn off inc/dec font size with mouse scroll wheel?

[david1pro]

Is there a way in the config file to turn OFF the increase/decrease font size with the mouse scroll wheel? I have an old laptop with a mouse pad and I find I am constantly zooming WAY IN or WAY OUT with accidental touches of the mouse pad (I don't even have a scroll wheel!). I use the right side of my pad to scroll up and down a page, and this often triggers the zooming effect. If I've recently scrolled up or down a page, hitting "CTRL+A" for "select all" also enacts a super zoom in or out, depending on the last direction I scrolled. All of this grows quite annoying when you've done it 10+ times in just a few minutes. I'd love to turn this off. Is there a way?