Remove Manage Sites

function kjm_remove_manage_sites_link() {

	if ( isset( $_GET['action'] ) && $_GET['action'] == 'manage_licenses' ) {

		add_filter( 'edd_sl_force_activation_increase', '__return_true' );

	}

}

add_action( 'wp_head', 'kjm_remove_manage_sites_link' );