Here's how to remove a couple of folders from Dropbox that are being stored locally but can still be access it from a web browser. These steps can be used for any folders that you may not need to have stored on your hard drive.
1. Click on the Dropbox icon in the toolbar at the top right of your screen.
2. Select the gear icon on the top right of that menu.
3. Select preferences.
4. Click on the Sync tab.
5. Click choose Folders to Sync.
6. Uncheck the BAE Training and BAE Videos folders (Certain people may only have one of these folders available to them).
7. Select Update.
Dropbox will automatically remove these unlinked folders from your hard drive. You can access these folders from a web browser (or clicking on the world icon from the dropbox menu in the toolbar). If you have trouble with this please let me know.