The -no-kvm-pit-reinjection option has been deprecated since
its introduction in QEMU 1.3. See commit <1569fa14>.

Drop the capability since all the QEMUs we support allow tuning
the kvm-pit properties via -global.

Also add the QEMU_CAPS_KVM_PIT_TICK_POLICY to the clock-catchup
tests, since expecting it to succeed with QEMU that does not
have kvm-pit makes no sense.
Signed-off-by: NJán Tomko <jtomko@redhat.com>
Reviewed-by: NJohn Ferlan <jferlan@redhat.com>