perf/amlogic: Remove unused header inclusions of <linux/version.h>

According to the "Abaci Robot":

 | ./drivers/perf/amlogic/meson_g12_ddr_pmu.c:15 linux/version.h not needed.
 | ./drivers/perf/amlogic/meson_ddr_pmu_core.c: 19 linux/version.h not needed.

So drop the unnecessary #include directives.

Link: https://bugzilla.openanolis.cn/show_bug.cgi?id=3280
Link: https://bugzilla.openanolis.cn/show_bug.cgi?id=3282


Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Link: https://lore.kernel.org/r/20221129032108.119661-1-jiapeng.chong@linux.alibaba.com
Link: https://lore.kernel.org/r/20221129032108.119661-2-jiapeng.chong@linux.alibaba.com


[will: Squashed patches together, filled out commit message a bit more]
Signed-off-by: Will Deacon <will@kernel.org>