arm64: zynqmp: Remove xlnx,zynqmp-aes node

AES can be discovered via firmware interface that's why remove node for it.

Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/eaf575a6ca92f8c10cefb447c08c1292025deb74.1697115523.git.michal.simek@amd.com