meson: do not make qga/vss-win32/meson.build conditional on C++ presence

C++ presence is checked by the qga/ directory, so it can be assumed
when building VSS module.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Konstantin Kostiuk <kkostiuk@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
1 file changed