ARM: meson: stop printing board model after sysinfo update

After the sysinfo update, Model is printed twice, remove
the now duplicate Model print from mach-meson/board-info.

Link: https://lore.kernel.org/r/20240124-u-boot-model-print-fix-v1-1-484960069623@linaro.org


Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>