staging: vt6656: iwctl: Remove redundant blank lines

There are a number of excessive blank lines in iwctl.c - this patch
gets rid of most of those that I personally considered the most
obvious ones.
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>