The Events Calendar: Exclude Category Events from Calendar

exclude-categories-from-calendar.php

add_action( 'pre_get_posts', 'exclude_events_category' );
function exclude_events_category( $query ) {

if ( $query->query_vars['eventDisplay'] == 'month' && $query->query_vars['post_type'] == TribeEvents::POSTTYPE && !is_tax(TribeEvents::TAXONOMY) && empty( $query->query_vars['suppress_filters'] ) ) {
	$query->set( 'tax_query', array(
		array(
			'taxonomy' => TribeEvents::TAXONOMY,
			'field' => 'slug',
			'terms' => array('2012'),
			'operator' => 'IN'
		)
		)
	);
}

return $query;

}