sharing_links_deleter.py

#This script is designed to delete any shared links you have
#You will need to have the Dropbox SDK installed, you can do that by running
#sudo -H pip install dropbox if on OS X

import dropbox

dbx = dropbox.Dropbox('YOUR AUTHORISATION TOKEN')
dbx.users_get_current_account()

for entry in dbx.sharing_get_shared_links('')._links_value:
    dbx.sharing_revoke_shared_link(entry.url)
    print entry.url + " - Deleted"

Caveat Emptor, you should definitely test this before you run it!