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/misc/ProjectCapabilitySelectionGroup.java
* registered against it.
     */
    private ArrayList getAvailableCategories() {
        ArrayList results = registry.getUsedCategories();
        Collections.sort(results, categoryComparator);
        if (registry.getMiscCategory() != null)
            results.add(registry.getMiscCategory());
        return results;
    }
    /**
     * Return <code>true</code> if the user may have made changes
     * to the capabilities of the project. Otherwise <code>false</code>
     * if no changes were made.
     * 
     * @return <code>true</true> when possible changes may have been made,
     *    <code>false</code> otherwise
     */
    public boolean getCapabilitiesModified() {
        return modified;
    }
    /**
     * Returns the content provider for the viewers
     */
    private IContentProvider getContentProvider() {
        return new WorkbenchContentProvider() {
            public Object[] getChildren(Object parentElement) {
                if (parentElement instanceof ArrayList)
                    return ((ArrayList) parentElement).toArray();
                else
                    return null;