tools/power/turbostat: Remove a redundant check

Platforms with has_msr_misc_pwr_mgmt set is a subset of platforms with
has_nhm_msrs set.

Thus remove the redudant check for platform->has_nhm_msrs.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Reviewed-by: Len Brown <len.brown@intel.com>

tools/power/x86/turbostat/turbostat.c

@@ -5665,9 +5665,6 @@ void decode_misc_pwr_mgmt_msr(void)
 {
 	unsigned long long msr;
 
-	if (!platform->has_nhm_msrs)
-		return;
-
 	if (!platform->has_msr_misc_pwr_mgmt)
 		return;