staging:vt6656: iwctl.c: Removed unneeded function

Removed the function iwctl_giwnwid, that just return a error code.

Changes v1 to v2:
	Removed same functions of vt6655 and vt6656.

Signed-off-by: Marcos Paulo de Souza <marcos.mage@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
6 files changed