Staging: rtl8192u: Remove old WIRELESS_EXT support

Remove support for building against ancient WIRELESS_EXT versions,
only leaving support for the current version: 22

Signed-off-by: Joel Pelaez Jorge <joelpelaez@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5 files changed