hiding default title column from sharepoint list definition elements.xml in SharePoint 2010.

Question

How to hide defualt column "Title" from list definition elements.xml in sharepoint 2010.
I have created custom content type and its inherit from 0x01(Item) when i add field into it then its show me default title field also. Just i want remove the default field from list definition.
<ContentType
ID="0x01D53D1FDB286747E68D1E5C3E4EF464A0"
Name="Products content type"
Description="Content types for products list"
Group="Custom content type for Products"
Version="0"
>
<FieldRefs>
<FieldRef ID="{A83E47F7-0BE8-49EB-8B7B-F009BFD3EF58}" Name="ProductName" DisplayName="Product Name" Description="field describes the product name"/>
<FieldRef ID="{7B274E7F-1C49-4116-969A-F584B46F3D5C}" Name="ProductCode" DisplayName=" Product Code" Description="field describes the product code"/>
<FieldRef ID="{EDD520B7-1958-45AC-801E-C8FE47144609}" Name="ProductCategory" DisplayName="Product Category" Description="field describes the product category"/>
<FieldRef ID="{FFA2511B-8672-499D-95A4-22044AAF00CC}" Name="ProductPrice" DisplayName="Product Price" Description="field describes the product price"/>
<FieldRef ID="{10927F13-2E67-4895-94D1-08387C7C6C5F}" Name="Description" DisplayName="Description" Description="field describes the product description"/>
</FieldRefs>

</ContentType>