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: cce0c23d ("KVM: selftests: Add wrapper to allocate page table page")
Signed-off-by: Shaoqin Huang <shahuang@redhat.com>
Link: https://lore.kernel.org/r/20230208071801.68620-1-shahuang@redhat.com


Signed-off-by: Sean Christopherson <seanjc@google.com>