staging: wfx: remove redundant test while calling wfx_update_pm()

Condition about wvif->state and wvif->bss_params.aid is already checked
at beginning of wfx_update_pm().

Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20191217161318.31402-34-Jerome.Pouiller@silabs.com


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