Remove the description tab only
If you want to remove only the description tab, copy and paste this code:

/**
 * Remove the description tab from woocommerce
 */
add_filter( 'woocommerce_product_tabs', 'woo_remove_product_tabs', 98 );
function woo_remove_product_tabs( $tabs ) {
    unset( $tabs['description'] );      	// Remove the description tab
    return $tabs;
}

Remove the review tab only
In case the tab you want to delete is only the review tab, copy and paste this:

/**
 * Remove the review tab from woocommerce
 */
add_filter( 'woocommerce_product_tabs', 'woo_remove_product_tabs', 98 );
function woo_remove_product_tabs( $tabs ) {
    unset( $tabs['reviews'] ); 			// Remove the reviews tab
    return $tabs;
}

Remove the additional tab only
Paste this snippet if your option is the only additional tab:

/**
 * Remove the additional tab from woocommerce
 */
add_filter( 'woocommerce_product_tabs', 'woo_remove_product_tabs', 98 );

function woo_remove_product_tabs( $tabs ) {

    unset( $tabs['additional_information'] );  	// Remove the additional information tab

    return $tabs;
}

Remove all three tabs
If your choice is discarding all these three tabs, this snippet is for you:

/**
 * Remove tabs from woocommerce
 */
add_filter( 'woocommerce_product_tabs', 'woo_remove_product_tabs', 98 );

function woo_remove_product_tabs( $tabs ) {

    unset( $tabs['description'] );      	// Remove the description tab
    unset( $tabs['reviews'] ); 			// Remove the reviews tab
    unset( $tabs['additional_information'] );  	// Remove the additional information tab

    return $tabs;
}