KVM: selftests: Remove duplicate macro definition

The KVM_GUEST_PAGE_TABLE_MIN_PADDR macro has been defined in
include/kvm_util_base.h. So remove the duplicate definition in
lib/kvm_util.c.

Fixes: cce0c23dd944 ("KVM: selftests: Add wrapper to allocate page table page")
Signed-off-by: Shaoqin Huang <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Sean Christopherson <[e-mail]>

tools/testing/selftests/kvm/lib/kvm_util.c

···
 	return vm_phy_pages_alloc(vm, 1, paddr_min, memslot);
 }
 
-/* Arbitrary minimum physical address used for virtual translation tables. */
-#define KVM_GUEST_PAGE_TABLE_MIN_PADDR 0x180000
-
 vm_paddr_t vm_alloc_page_table(struct kvm_vm *vm)
 {
 	return vm_phy_page_alloc(vm, KVM_GUEST_PAGE_TABLE_MIN_PADDR,