Hi, I am having problems with the standard Google fonts imported in 1 of the free available themes in Web Designer 10 Premium

I have spend a whole day now trying to get rid of them, they give a warning about unsafe content in our SSL pages.
I have seen in some checking tools that Open Sans and Abel are used and called from:

Code:
“http://fonts.googleapis.com/css?family=Open+Sans:regular,700&subset=latin” geblokkeerd
so a non https source
We tried getting all text in Arial but even then these lines stay there

anybody have a tip where to get rid of this and replace all these Google fonts for something standard?