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<?php

/**
 * Remove "SKU" from product details page.
 */
add_filter( 'wc_product_sku_enabled', 'mycode_remove_sku_from_product_page' );
function mycode_remove_sku_from_product_page( $boolean ) {
	if ( is_single() ) {
		$boolean = false;
	}
	return $boolean;
}