public function removeWishList($customer_id,$product_id)
    {
        $itemCollection = Mage::getModel('wishlist/item')->getCollection()
            ->addCustomerIdFilter($customer_id);

        foreach($itemCollection as $item) {
            $item->delete();
            //Mage::getModel('wishlist/item')->load($product_id)->delete();
        }
    }

Mage::getModel('wishlist/item')->load($id)->delete();

**$itemCollection = Mage::getModel('wishlist/item')->getCollection()
                    ->addCustomerIdFilter($customerId);
    foreach($itemCollection as $item) {
         if($item->getProduct()->getId() == $productId){
            $item->delete();
         }
    }**