Como ocultar, remover ou desinstalar a barra do Bing do Firefox, Internet Explorer
Want to remove Bing Bar from your system completely? Normally you can uninstall any Windows Live Essentials program by running the uninstaller from Control Panel –> Programs and Features. However in case of Bing Bar, you will not be able to find the option to remove it in the Uninstaller, which includes all other programs.
Bing Bar is listed as a separate program in the Programs and Features control panel applet. Simply select it and click Uninstall to remove it.