Add this code to your child theme’s functions.php:

add_action( 'wp_head', 'remove_value_column_package_table' );
function remove_value_column_package_table(){
	remove_filter( 'wpcargo_package_fields', 'wpcsr_package_fields' );
}

Or you can also use this code:

add_filter( 'wpcargo_package_fields', 'modify_package_fields' );
function modify_package_fields( $package_fields){
    unset( $package_fields['wpc-pm-value'] );
    return $package_fields;
}