Deleting a language file
In the multi-language edition of PHPKB software, Superuser can purge a language file ( except English ) from knowledge base as English is default language. For this, Click Manage link under Languages section of left navigation bar to open 'Manage Languages' page as shown below:
Click on Actions button corresponding to the file you want to delete and select Delete option. If Language has no items under it, it will display confirmation dialog box, you can click "Yes, Delete it" button to delete that language file. If there are items (articles, categories, news etc.) added under that language, it will redirect you to " Purge Language " page where you can either follow the suggestion to temporary disable the file or can delete the file with all its contents as shown in the screenshot below:
You need to enter admin password in the given input field and click on "Delete" button to permanently remove this file from the knowledge base.