hv:remove some unnecessary includes

remove some unnecessary includes

Tracked-On: #1842
Signed-off-by: Mingqiang Chi <mingqiang.chi@intel.com>

hypervisor/debug/sbuf.c

@@ -12,7 +12,6 @@
 #include <types.h>
 #include <rtl.h>
 #include <errno.h>
-#include <sbuf.h>
 #include <cpu.h>
 #include <per_cpu.h>
 

hypervisor/debug/shell.c

@@ -7,7 +7,6 @@
 #include <types.h>
 #include <errno.h>
 #include <bits.h>
-#include <page.h>
 #include "shell_priv.h"
 #include <irq.h>
 #include <console.h>