To delete Bing from MacBook Air, you can follow these steps ^{1 2 3 4}:

• Open the System Preferences.
• From the drop-down menu, select “Internet & Wireless” and then select “Bing”.
• The Bing page will open with a “Remove” button at the top right of the window. Click the “Remove” button to delete Bing from your MacBook Air.
• Open Safari.
• Click on “Safari” in the top menu bar.
• Select “Preferences.”
• Go to the “Extensions” tab.
• Review the list of extensions.
• Look for unwanted Microsoft Bing extensions and click to uninstall or remove.
• Close the Preferences window.
• Open a Finder window.
• Click Applications line on the sidebar.
• Select the application related to Bing, right-click it and choose Move to Trash.
• Open Safari, then click on the Safari menu and select Settings.
• Click on the Extensions tab.
• Look for an extension that you haven’t installed or that seems suspicious.
• Select it and click Uninstall.