Actually i am running website on wordpress where i have installed Transposh plugin on my site 'example'. Unfortunately, despite having English as the default language and therefore available at example.com/xxx, Google is indexing example.com/en/xxx so i m getting problem with duplicate content now i want to remove this plugin and links from google so that my content will be refine without getting duplicate content pages. Do you have any solution to do this safely. I think myself to remove this plugin from website, though it will create 404 errors from google links but i can add redirect code in htaccess till google would remove that "example.com/en/xxx " not found links.

If you know any other healthy way to handle this please help me!