arm64: acpi: Drop message logging SPCR default console

arm64: acpi: Drop message logging SPCR default console

Commit f5a4af3c7527 ("ACPI: Add acpi=nospcr to disable ACPI SPCR as
default console on ARM64") introduced a command line parameter to
prevent using SPCR provided console as default. It also introduced a
message to log this choice.

Drop the message as it is not particularly useful and can be incorrect
in situations where no SPCR is provided by the firmware.

Link: https://lore.kernel.org/all/aQN0YWUYaPYWpgJM@willie-the-truck/
Signed-off-by: Punit Agrawal <punit.agrawal@oss.qualcomm.com>
Signed-off-by: Will Deacon <will@kernel.org>