WooCommerce - Remove default product tabs.

functions.php

<?php
/**
 * Remove default product tabs.
 */
function cs_woocommerce_remove_default_tags( $tabs ) {
	// Remove description tab.
	if ( isset( $tabs['description'] ) ) {
		unset( $tabs['description'] );
	}

	// Remove additional information tab.
	if ( isset( $tabs['additional_information'] ) ) {
		unset( $tabs['additional_information'] );
	}

	// Remove reviews tab.
	if ( isset( $tabs['reviews'] ) ) {
		unset( $tabs['reviews'] );
	}

	return $tabs;
}

add_filter( 'woocommerce_product_tabs', 'cs_woocommerce_remove_default_tags' );