Glad you got it working.
If you are wanting to remove the sub Category from the categoryBrowse.ascx
then take a look at removing the nested repeater from the control.
<asp:Repeater ID="NestedSubCategoryRepeater" Runat="server" DataSourceID="NestedCategoryDS"
OnItemCommand="NestedSubCategoryRepeater_ItemCommand">
<HeaderTemplate><ul>
</HeaderTemplate>
<ItemTemplate>
<li>
<asp:LinkButton ID="SubCategoryButton" Runat="server" Text='<%# Eval("Name") %>'
CommandArgument='<%# Eval("Id") %>' />
(<%# Eval("NumActiveAds") %>)</li></ItemTemplate>
<FooterTemplate></ul></FooterTemplate>
</asp:Repeater>
Hope it helps