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Click the Remove button at the bottom, to take it off your list.A domain name is a unique name that identifies your website's location on the internet.Click on the search engine you want to remove, to highlight it.
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To remove a search engine from Firefox, restore the default search engines that come with Firefox or add a new search engine, go to the Search Shortcuts section of the Search panel. This will not remove the search engines themselves. To remove alternative search engines you don't want to be displayed in the search bar or address bar, remove the check mark next to the search engine listed in the Search panel under Search Shortcuts. You can choose an alternative search type and use it for your search, if you don't want to use the current default. When you start typing in the address bar or search bar, you'll see icons below the search suggestions, to search instead with other search engines, Bookmarks, Tabs or History.
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These will be indicated with a clock icon instead of a magnifying glass icon. Up to two suggestions from your Search history may also appear.
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Note: Some extensions that are added to Firefox can set a new default search engine.
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