platform/x86: huawei-wmi: No need to check for battery name

No need to check for battery name, we already check if the WMI function is
available in huawei_wmi_battery_setup.

Fixes: 355a070b ("platform/x86: huawei-wmi: Add battery charging thresholds")
Signed-off-by: Ayman Bagabas <ayman.bagabas@gmail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>