Você pode excluir todo o produto usando o Direct Sql.
Faça backup do seu banco de dados e execute as seguintes consultas sql.
Redefina todas as tabelas de produtos. Cuidado, o script abaixo excluirá TODOS os dados do produto, com cuidado.
`SET FOREIGN_KEY_CHECKS = 0;
TRUNCATE TABLE `catalog_product_bundle_option`;
TRUNCATE TABLE `catalog_product_bundle_option_value`;
TRUNCATE TABLE `catalog_product_bundle_selection`;
TRUNCATE TABLE `catalog_product_entity_datetime`;
TRUNCATE TABLE `catalog_product_entity_decimal`;
TRUNCATE TABLE `catalog_product_entity_gallery`;
TRUNCATE TABLE `catalog_product_entity_int`;
TRUNCATE TABLE `catalog_product_entity_media_gallery`;
TRUNCATE TABLE `catalog_product_entity_media_gallery_value`;
TRUNCATE TABLE `catalog_product_entity_text`;
TRUNCATE TABLE `catalog_product_entity_tier_price`;
TRUNCATE TABLE `catalog_product_entity_varchar`;
TRUNCATE TABLE `catalog_product_link`;
TRUNCATE TABLE `catalog_product_link_attribute`;
TRUNCATE TABLE `catalog_product_link_attribute_decimal`;
TRUNCATE TABLE `catalog_product_link_attribute_int`;
TRUNCATE TABLE `catalog_product_link_attribute_varchar`;
TRUNCATE TABLE `catalog_product_link_type`;
TRUNCATE TABLE `catalog_product_option`;
TRUNCATE TABLE `catalog_product_option_price`;
TRUNCATE TABLE `catalog_product_option_title`;
TRUNCATE TABLE `catalog_product_option_type_price`;
TRUNCATE TABLE `catalog_product_option_type_title`;
TRUNCATE TABLE `catalog_product_option_type_value`;
TRUNCATE TABLE `catalog_product_super_attribute`;
TRUNCATE TABLE `catalog_product_super_attribute_label`;
TRUNCATE TABLE `catalog_product_super_attribute_pricing`;
TRUNCATE TABLE `catalog_product_super_link`;
TRUNCATE TABLE `catalog_product_enabled_index`;
TRUNCATE TABLE `catalog_product_website`;
TRUNCATE TABLE `catalog_product_entity`;
TRUNCATE TABLE `cataloginventory_stock`;
TRUNCATE TABLE `cataloginventory_stock_item`;
TRUNCATE TABLE `cataloginventory_stock_status`;
INSERT INTO `catalog_product_link_type` VALUES(1, 'relation');
INSERT INTO `catalog_product_link_type` VALUES(3, 'super');
INSERT INTO `catalog_product_link_type` VALUES(4, 'up_sell');
INSERT INTO `catalog_product_link_type` VALUES(5, 'cross_sell');
INSERT INTO `catalog_product_link_attribute` VALUES(1, 1, 'position', 'int');
INSERT INTO `catalog_product_link_attribute` VALUES(2, 3, 'position', 'int');
INSERT INTO `catalog_product_link_attribute` VALUES(3, 3, 'qty', 'decimal');
INSERT INTO `catalog_product_link_attribute` VALUES(4, 4, 'position', 'int');
INSERT INTO `catalog_product_link_attribute` VALUES(5, 5, 'position', 'int');
INSERT INTO `cataloginventory_stock` VALUES(1, 'Default');
SET FOREIGN_KEY_CHECKS = 1;`
Remova as contagens de produtos da categoria no back-end
`SET FOREIGN_KEY_CHECKS = 0;
TRUNCATE TABLE `catalog_category_product`;
TRUNCATE TABLE `catalog_category_product_index`;
SET FOREIGN_KEY_CHECKS = 1;`
Remova o best-seller e a maioria dos produtos de visualização nos painéis
`SET FOREIGN_KEY_CHECKS = 0;
TRUNCATE TABLE `report_compared_product_index`;
TRUNCATE TABLE `report_viewed_product_aggregated_daily`;
TRUNCATE TABLE `report_viewed_product_aggregated_monthly`;
TRUNCATE TABLE `report_viewed_product_aggregated_yearly`;
TRUNCATE TABLE `report_viewed_product_index`;
TRUNCATE TABLE `sales_bestsellers_aggregated_daily`;
TRUNCATE TABLE `sales_bestsellers_aggregated_monthly`;
TRUNCATE TABLE `sales_bestsellers_aggregated_yearly`;
SET FOREIGN_KEY_CHECKS = 1;`
Lave toda a mesa plana de produtos
`SET FOREIGN_KEY_CHECKS = 0;
DELETE FROM catalog_product_flat_1;
DELETE FROM catalog_product_flat_2;
DELETE FROM catalog_product_flat_3;
DELETE FROM catalog_product_flat_4;
DELETE FROM catalog_product_flat_5;
SET FOREIGN_KEY_CHECKS = 1;`
Remova a revisão e a classificação dos produtos
`SET FOREIGN_KEY_CHECKS = 0;
TRUNCATE table `rating_option_vote`;
TRUNCATE table `rating_option_vote_aggregated`;
TRUNCATE table `review`;
TRUNCATE table `review_detail`;
TRUNCATE table `review_entity_summary`;
TRUNCATE table `review_store`;
SET FOREIGN_KEY_CHECKS = 1;`
Para liberação corporativa, as tabelas a seguir
`SET FOREIGN_KEY_CHECKS = 0;
TRUNCATE TABLE `catalog_category_flat_cl`;
TRUNCATE TABLE `catalog_category_product_cat_cl`;
TRUNCATE TABLE `catalog_category_product_index_cl`;
TRUNCATE TABLE `catalog_product_flat_cl`;
TRUNCATE TABLE `catalog_product_index_price_cl`;
TRUNCATE TABLE `cataloginventory_stock_status_cl`;
TRUNCATE TABLE `catalogsearch_fulltext_cl`;
SET FOREIGN_KEY_CHECKS = 1;`