staging: vt6655: remove duplicate MACvSetPacketFilter

Packet filtering is already done in vnt_configure.

A call to MACvSetPacketFilter is not necessary in MACvInitialize as
this will be done by vnt_configure when interface is up.

Also remove macros associated with this function.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>