ACPI/IORT: Remove linker section for IORT entries again

In commit 316ca880 ("ACPI/IORT: Remove linker section for IORT entries
probing"), iort entries was removed in vmlinux.lds.h. But in
commit 2fcc112a

 ("clocksource/drivers: Rename clksrc table to timer"),
this line was back incorrectly.

It does no harm except for adding some useless symbols, so fix it.

Signed-off-by: Jia He <jia.he@hxt-semitech.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>