hypervisor: Don't enable TDX debug

This might not be correctly supported, therefore best to keep it
disabled by default.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>

hypervisor/src/kvm/mod.rs

@@ -525,7 +525,7 @@ impl vm::Vm for KvmVm {
         let data = TdxInitVm {
             max_vcpus,
             tsc_khz: 0,
-            attributes: 1, // TDX1_TD_ATTRIBUTE_DEBUG,
+            attributes: 0,
             cpuid: cpuid.as_fam_struct_ptr() as u64,
             mrconfigid: [0; 6],
             mrowner: [0; 6],