Revert "qemuxml2argvtest: Use real-caps testing for 'acpi-hotplug-bridge-disable'"

Revert "qemuxml2argvtest: Use real-caps testing for 'acpi-hotplug-bridge-disable'"

This reverts commit 2d20f0bb05175d18513220bccd1dbaa207cc4c6a.

Conflicts:
 tests/qemuxml2argvdata/pc-i440fx-acpi-hotplug-bridge-disable.args
 tests/qemuxml2argvdata/q35-acpi-hotplug-bridge-disable.args

  the test output of these files was regenerated because the tests
  were changed upstream to use JSON on the commandline at a later
  commit than the commit being reverted here (where they were changed
  to use latest caps, but the patches to use JSON on the commandline
  hadn't been committed yet).

Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Ani Sinha <ani@anisinha.ca>