Hide Ribbon button for specific content type

Question

I want to remove ribbon entry for one the content type. OOTB if you add any content type it will create a button entry in "New Document" Ribbon. I don't want this entry for one specific content type.

Attaching image for better understanding.

I want to remove this "Link to a large document" button.

This is what I already tried

  <CustomAction
  Id="CustomIdentifier.Ribbon.Documents.New.NewFolder.Hide"
  Location="CommandUI.Ribbon"
  RegistrationType="ContentType"
  RegistrationId="0x01010A0096AF48B1B8374FD7B47D6A8C8E711F4E">
    <CommandUIExtension>
      <CommandUIDefinitions>
        <CommandUIDefinition Location="Ribbon.Documents.New.NewDocument.Menu.ContentTypes">                    
        </CommandUIDefinition>
      </CommandUIDefinitions>
    </CommandUIExtension>
  </CustomAction>

Answer 1

Just hide the Content Type from the button:

Go in to List Settings and click on "Change new button order and default Content type" under the Content Types headline.

Set "Visible on new button" to false for your unwanted content type. Absolutely no need for a custom action

More information: http://bernado-nguyen-hoan.com/2010/12/08/content-type-visibility-in-document-libraries/

And, if you like to use code, set this property to false SPContentType.Hidden: http://msdn.microsoft.com/en-us/library/microsoft.sharepoint.spcontenttype.hidden.aspx