Drop trainvel backend, this is now a frontend-only app

src/Station.test.js

@@ -0,0 +1,8 @@
+import { render, screen } from '@testing-library/react';
+import Station from './Station';
+
+test('renders learn react link', () => {
+  render(<Station />);
+  const linkElement = screen.getByText(/learn react/i);
+  expect(linkElement).toBeInTheDocument();
+});