board: xilinx: Remove unused ancient i2c driver

There is new driver in the driver folder.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Tested-by: Rommel Custodio <sessyargc@gmail.com>
Acked-by: Heiko Schocher <hs@denx.de>
2 files changed