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/NewProjectWizard.java
while (it.hasNext()) {
                    String id = (String) it.next();
                    if (!results.contains(id))
                        results.add(id);
                }
            }
        }
        String[] ids = new String[results.size()];
        results.toArray(ids);
        return ids;
    }
    /* (non-Javadoc)
     * Method declared on IProjectProvider.
     */
    public IProject getProject() {
        return newProject;
    }
    /* (non-Javadoc)
     * Method declared on IWizard.
     */
    public IWizardPage getNextPage(IWizardPage page) {
        if (page == capabilityPage) {
            if (!buildSteps())
                return capabilityPage;
        }
        return super.getNextPage(page);
    }
    /* (non-Javadoc)
     * Method declared on MultiStepWizard.
     */