There are two main applications that you can uninstall when you complete your export; Dropbox and eNoteFile.
Uninstall applications:
Click on Start ➡ type Control Panel
Search for Dropbox and click uninstall
Search for eNoteFile and click uninstall
Storage clean up
Once the apps are uninstalled you can delete the encrypted Dropbox content which will usually be located under c:\Users\%USERNAME%\Dropbox.