I had the same problem with our solution. In our case it was a misnamed Helvetica Neue. It was called "Helvetica Neue" (with quotes) and it was a mess with the database design report and caused a lot of troubles with line spacing and padding.
The definitive solution was to create a new theme and manually recreate my 662 styles, one by one. Also had to manually reassign the style for each layout object I separated the original theme in three: Screen Layouts, Print Layouts and Base Tables. it was easier to manage.
The bad news is there's no way to avoid the manual change, in my opinion.
It would be GREAT if we had a way to edit the CSS related to each theme and perform a Find/Replace. It would turn months of work into minutes.
Is there anyway I can delete the fonts available on filemaker and just leave the two fonts I use
Tahoma and verdana only.
Not that I know of. FileMaker fonts are the system fonts. They are available for all applications in your computer.