Filter Languages listed in Code Snippets Manager in Isolated Shell Application

I have created a Isolated Shell application. The "Code Snippet Manager" in the Isolated shell application is listing many languages which doesn't have make any sense to my application. I have added a user defined language snippets, which is also listing in that combo box.
 
Is it possible to filter out the languages coming from Visual Studio Installation (eg : CSS, CSharp, JS, XAML) from the Code Snippets Manager ?