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/ProjectCapabilitySimpleSelectionPage.java
wiz.addPages();
                        mapCapToWizard.put(chosenCapability, wiz);
                        wizard[0] = wiz;
                    }
                }
            });
        }
        if (wizard[0] == null)
            return null;
        IWizardPage page = wizard[0].getStartingPage();
        wizard[0] = null;
        return page;
    }
    private boolean validateChosenCapability() {
        if (chosenCapability == null) {
            setErrorMessage(null);
            return false;
        }
        Capability[] caps = reg.getProjectCapabilities(project);
        List existingCaps = Arrays.asList(caps);
        if (existingCaps.contains(chosenCapability)) {
            setErrorMessage(IDEWorkbenchMessages.ProjectCapabilitySimpleSelectionPage_capabilityExist);
            return false;
        }
        String[] ids = reg.getPrerequisiteIds(chosenCapability);
        Capability[] prereqs = reg.findCapabilities(ids);
        for (int i = 0; i < prereqs.length; i++) {
            if (prereqs[i] == null) {
                setErrorMessage(NLS.bind(IDEWorkbenchMessages.ProjectCapabilitySimpleSelectionPage_capabilityMissing, ids[i]));
                return false;