sclang: HID - remove 10.4 HID code

Signed-off-by: Tim Blechmann <tim@klingt.org>
cmake build system: remove wii support form scapp

Signed-off-by: Tim Blechmann <tim@klingt.org>
readme: osx - remove 10.8 warning

the deprecated code in question has been removed and it builds in a simple
cmake, make, make install sequence

Signed-off-by: Tim Blechmann <tim@klingt.org>