x86/xen: Remove duplicate #include

./arch/x86/xen/enlighten.c: linux/memblock.h is included more than once.

Reported-by: Abaci Robot <[email protected]>
Signed-off-by: Jiapeng Chong <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
Reviewed-by: Juergen Gross <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=8610

Author: Jiapeng Chong

arch/x86/xen/enlighten.c

@@ -1,8 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0
 
-#ifdef CONFIG_XEN_BALLOON_MEMORY_HOTPLUG
-#include <linux/memblock.h>
-#endif
 #include <linux/console.h>
 #include <linux/cpu.h>
 #include <linux/kexec.h>