Please run below sql code
SET @file = '/i/m/image.jpg';
START TRANSACTION;
DELETE FROM catalog_product_entity_media_gallery WHERE value = @file;
DELETE FROM catalog_product_entity_varchar WHERE value = @file;
COMMIT;
Please run below sql code
SET @file = '/i/m/image.jpg';
START TRANSACTION;
DELETE FROM catalog_product_entity_media_gallery WHERE value = @file;
DELETE FROM catalog_product_entity_varchar WHERE value = @file;
COMMIT;