PnpCtxRegDeleteValue

NTSTATUS __fastcall PnpCtxRegDeleteValue(__int64 a1, void *a2, const WCHAR *a3){
  NTSTATUS result; 
  struct _UNICODE_STRING DestinationString; 
  DestinationString = 0i64;
  result = RtlInitUnicodeStringEx(&DestinationString, (WCHAR *)a3);
  if( result >= 0 )
    return ZwDeleteValueKey(a2, &DestinationString);
  return result;
}

Referenced by:

PiCMCreateDevice
PipUpdateDeviceProducts