Posting in the Magento forums has been disabled pending the implementation of a new and improved forum solution which should better serve the community.
For new questions please post at magento.stackexchange.com, the community-run support site for the Magento community. We will be providing updates on the new forum solution soon. For questions or concerns please email firstname.lastname@example.org.
We are working on the solution that will be available in the following releases. For now you can delete or rename store folder under the magento root (I mean ‘fr’ or ‘de’ or whatever else you have for the store you want to get rid of.