Hello [name]! Thanks for joining the GMC. Before making any posts in the Tech Support forum, can we suggest you read the forum rules? These are simple guidelines that we ask you to follow so that you can get the best help possible for your issue.
What "recent files" are you talking about? I only see recent projects and recent windows. If it's recent windows, then just right-click and select clear all. Don't know if you can do anything about recent projects.
If neither of the above is what you mean, could you explain in more detail what you are wanting to know and what you are referring to?