x86/access: Remove timeout overrides now that performance doesn't suck

The access test now takes less than 5 seconds when TDP is enabled, and
is well under the default 90 second timeout when TDP is disabled.  Ditto
for VMX's #PF interception variant, which is no longer being penalized by
unnecessary CR exits and other general stupidity.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20211125012857.508243-21-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>