arm: socfpga: de0_nano: Zap VIRTUAL_TARGET

There is no VT for this board, so remove this incorrect macro.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <clsee@altera.com>
Cc: Dinh Nguyen <dinguyen@opensource.altera.com>
1 file changed