[ARM] 4050/1: S3C24XX: remove old changelogs in arch/arm/mach-s3c2410

Remove old changelog entries in arch/arm/mach-s3c2410
which should be available from the version control
system.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>