Revert "tty: serial: meson: Add a earlycon for the T7 SoC"

This reverts commit 6a4197f9

New SoC will use ttyS0 instead of ttyAML, so T7 SoC doesn't need a
OF_EARLYCON_DECLARE.

Fixes: 6a4197f9 ("tty: serial: meson: Add a earlycon for the T7 SoC")
Signed-off-by: Lucas Tanure <tanure@linux.com>
Link: https://lore.kernel.org/r/20230827082944.5100-1-tanure@linux.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>