chore(dev-server): Remove theme configuration from Vite setup for simplification

packages/dev-server/vite.config.mts

@@ -9,18 +9,6 @@ export default defineConfig({
             vendureConfigPath: pathToFileURL('./dev-config.ts'),
             adminUiConfig: { apiHost: 'http://localhost', apiPort: 3000 },
             gqlTadaOutputPath: path.resolve(__dirname, './graphql/'),
-            theme: {
-                light: {
-                    brand: 'red',
-                    'brand-lighter': 'red',
-                    'brand-darker': 'red',
-                },
-                dark: {
-                    brand: 'red',
-                    'brand-lighter': 'red',
-                    'brand-darker': 'red',
-                },
-            },
         }) as any,
     ],
 });