great news; there is no difference in concept between removing the hyperlink from a typeahead field vs a normal field. In that just as you would remove the hyperlink from a normal field by changing it into a valueexpression, the same thing holds true here.
here is a link to the general concept:
https://experienceleaguecommunities.adobe.com/t5/workfront-questions/remove-link-for-from-field-in-r...
for typeaheads--depending on the report type and how the field looks, it is usually the case of:
1) adding a "DE:" to the beginning of the field in the valueexpression
2) adding parens around the field up until the colon
3) switching out the colon for a period, and adding more parens after.
I can't speak for your field in particular but you can certainly locate some other examples if you search more generally (e.g. maybe just search on words like typeahead and valueexpression so you can see how the syntax would translate for different fields)
