// 属性を完全に削除します。
$Attributes = array('accessories_size','accessories_type','apparel_type','author_artist','bag_luggage_type','bedding_pattern','bed_bath_type','books_music_type','camera_megapixels',
'camera_type','coater','color','colors','cost','decor_type','ebizmarts_mark_visited','electronic_type','featured','fit','format','frame_style','gender','gendered','genre','homeware_style',
'home_decor_type','impressions','is_sold','jewelry_type','length','lens_type','luggage_size','luggage_style','luggage_travel_style','make','manufacturer','material','model','necklace_length',
'occasion','perfector','sample_item_1','sheet_size','shoe_size','shoe_type','size','sleeve_length','style');
$entityType = 'catalog_product';
foreach($Attributes as $index => $attrCode){
$attributeId = Mage::getResourceModel('eav/entity_attribute')->getIdByCode($entityType,$attrCode); // it return false when attribute not exist.
if($attributeId){
Mage::getModel('catalog/product_attribute_api')->remove($attributeId);
}
}