tools/power/x86/intel-speed-select: Show level 0 name for new api_version

level 0 name is not shown in some case for backward compatibility reason.
No need to keep this quirk for new api_version.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>