x86/hyperv: Remove duplicate include

./arch/x86/hyperv/ivm.c: asm/sev.h is included more than once.
./arch/x86/hyperv/ivm.c: asm/coco.h is included more than once.

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=6212


Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Reviewed-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Link: https://lore.kernel.org/r/20230824080352.98945-1-jiapeng.chong@linux.alibaba.com