How to remove a Category from Import wizard in Eclipse-RCP?

Question

I need to add an import wizard into my eclipse-rcp app. For that I would like to use existing wizard with only my categories. I found couple of examples in the Internet, but

Answer 1

It sounds like it's related to your RCP run configuration and the plug-ins included.

The General category (with it's wizards Preferences, File System, Existing Projects, Archive File) is contributed by the org.eclipse.ui.ide plug-in.

Is this plug-in required by your RCP application?

Have a look at this question related to the Help Menu in an RCP as it describes how to check and change the plug-ins used.