add_filter( 'aioseo_schema_output', 'product_schema_aggregate_reviews' );

function product_schema_aggregate_reviews( $schema ) {

	foreach ( $schema as &$schemaItem ) {

		if ( 'Product' === $schemaItem['@type'] ) {

			unset ($schemaItem['aggregateRating']);

			unset ($schemaItem['review']);

		}

	}

	return $schema;

}