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/extensions/org/eclipse/ui/actions/CreateProjectAction.java
* Ignores any IDs which do not represent valid capabilities.
     * 
     * @param ids initial project capability ids to select
     */
    public void setInitialProjectCapabilities(String[] ids) {
        if (ids == null || ids.length == 0)
            initialProjectCapabilities = null;
        else {
            CapabilityRegistry reg = IDEWorkbenchPlugin.getDefault()
                    .getCapabilityRegistry();
            ArrayList results = new ArrayList(ids.length);
            for (int i = 0; i < ids.length; i++) {
                Capability cap = reg.findCapability(ids[i]);
                if (cap != null && cap.isValid())
                    results.add(cap);
            }
            if (results.isEmpty())
                initialProjectCapabilities = null;
            else {
                initialProjectCapabilities = new Capability[results.size()];
                results.toArray(initialProjectCapabilities);
            }
        }
    }
    /**
     * Sets the initial project name. Leading and trailing
     * spaces in the name are ignored.
     * 
     * @param name initial project name
     */