Disable more wxAny tests under OS X to try to find the buildbot crash.

Disable more wxAny tests under OS X to try to find the buildbot crash.

Disabling wxVariantConversions test was not enough to fix the crash happening
in OS X PPC build slave, so disable a few more of them.

Temporarily do it for any wxOSX build, the run-time check for buildbot will be
restored later when I finally manage to find the problematic test(s?).

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@73944 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775