staging: wlan-ng: (coding style) remove unnecessary blank line before "}"

Fix checkpatch checks: "Blank lines aren't necessary before a close brace '}' "
Remove two unnecessary blank lines.

Signed-off-by: Christian Colic <colic.christian@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>