staging: wfx: drop useless wfx_scan_complete()

Since wfx_scan_complete() is now only called from
wfx_scan_complete_cb(), it make sense to merge the both functions.

Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20191217161318.31402-47-Jerome.Pouiller@silabs.com


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