Get rid of $DEFINES
Get rid of $DEFINES

This variable only defines -DHAVE_CONFIG_H which is defined by
libtool anyway.

Signed-off-by: Michal Privoznik <83d82aaba2eed257f4814b0c239c260c4caaadf0@redhat.com>

zippy2/libvirt-php,libvirt/libvirt-php,libvirt/libvirt-php,libvirt/libvirt-php,zippy2/libvirt-php,zippy2/libvirt-php