If you are looking to remove a language from your Organization you can accomplish this using the Language Settings Tool in the Language Settings tab. The Language Tool will allow you to manage which languages you want to be added to your Organization, this is also where you will either manually enter or import the language strings for the added languages. To remove a language make sure that all fields are empty in that column and save changes. This will remove the language from the Organization.
Pro Tip: When using the Language Settings Tool on either a PC or a Mac there are shortcut keys to quickly navigate the columns. Using these shortcuts will make it easier to view and enter language strings. To move horizontally use the “Tab” key and to move vertically within a text box use “Shift+Enter”.