Implements MODULE_config_import_delete().
function contact_config_import_delete($name, $new_config, $old_config) {
if (strpos($name, 'contact.category.') !== 0) {
return FALSE;
}
list(, , $id) = explode('.', $name);
entity_delete_multiple('contact_category', array(
$id,
));
return TRUE;
}