Bug 126779 [IDE] Removed deprecated project capabilities API and implementation
It was created then deprecated before 2.0 shipped. As has never been API and we don't use it we should delete it.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/dialogs/RemoveCapabilityWizard.java
ICapabilityUninstallWizard {
    private IProject project;
    private String[] natureIds;
    /**
     * Creates an empty wizard for removing a capability
     * from a project.
     */
    RemoveCapabilityWizard() {
        super();
    }
    /* (non-Javadoc)
     * Method declared on ICapabilityUninstallWizard.
     */
    public void init(IWorkbench workbench, IStructuredSelection selection,
            IProject project, String[] natureIds) {
        this.project = project;
        this.natureIds = natureIds;
    }
    /* (non-Javadoc)
     * Method declared on IWizard.
     */
    public boolean performFinish() {
        return updateNatures();
    }