In DriverSampleInit, has installed the configAccess protocol to the DriverHandle[1], but don't uninstall it in DriverSampleUnload. Now uninstall the configAccess protocol. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Dandan Bi <dandan.bi@intel.com> Reviewed-by: Eric Dong <eric.dong@intel.com>