Delete the asset from your project. It may take time for it to remove itself from the CDN. You can open a trouble ticket to see if the team can purge it afterwards.
Currently I have the same problem (a webflow link with my CV apeared when my name is typed in google). My situation is a bit different from your’s, I really dont know on which website i uploaded this CV and the platform don’t give any information about that.
Hope that someone will help me to find a solution, all my personal informations are in the cv … It can be dangerous for me.