Who is this 5 post count guy swooping in with a script!?
OP if you do need to quickly remove a bunch of files from your system that are empty, you can drag them all into a new reaper session (Save it first) and when it asks place them all on one track sequentially. You may need to make sure 'Copy imported media to project media directory' is unticked in preferences > Media, and same for the Project Preferences > Media where there is 'On import of media to project' setting.
Use action (with SWS installed)
SWS: Organize items by peak RMS
It should now be fairly obvious when you zoom out where the blank files start.
Delete all but the blank ones.
Save As, and be sure to tick
Move all media into project directory. This will move all your blank files out of wherever they were.
Delete the project.
