Acpiview currently allows displaying help info by specifying both -? and /? flags. This patch removes /? from valid command line flags that can be passed to the acpiview tool, as this flag is not used for such purpose in other UEFI shell commands. Signed-off-by: Krzysztof Koch <krzysztof.koch@arm.com> Reviewed-by: Alexei Fedorov <Alexei.Fedorov@arm.com> Reviewed-by: Zhichao Gao <zhichao.gao@intel.com> Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>