Learn more about removing extensions from Firefox. Click the Remove button to confirm deletion. This will remove it from your browser toolbar. info Note if you wish to disable chrome extensions, you can flip the blue status toggle in the lower right corner. To delete the browser extension, click the Remove button.This makes sure that all extensions have been verified before it reaches the consumers. Starting in Firefox version 57, only extensions built using WebExtensions APIs will work. Cannot remove add-on, extension, toolbars or theme.