staging: r8188eu: pwr_state_check_cnts is always zero

The field pwr_state_check_cnts in struct pwrctrl_priv is set to 0 and
never changed. Remove it and remove related dead code.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20220404082142.4639-5-straube.linux@gmail.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>