chore(core): remove css file

- CSS file is not needed for Inertia

resources/css/app.css

@@ -1,12 +0,0 @@
-@import 'tailwindcss';
-
-@source '../../vendor/laravel/framework/src/Illuminate/Pagination/resources/views/*.blade.php';
-@source '../../storage/framework/views/*.php';
-@source "../**/*.blade.php";
-@source "../**/*.js";
-@source "../**/*.vue";
-
-@theme {
-    --font-sans: 'Instrument Sans', ui-sans-serif, system-ui, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji',
-        'Segoe UI Symbol', 'Noto Color Emoji';
-}

vite.config.js

@@ -5,7 +5,7 @@ import tailwindcss from '@tailwindcss/vite';
 export default defineConfig({
     plugins: [
         laravel({
-            input: ['resources/css/app.css', 'resources/js/app.js'],
+            input: ['resources/js/app.js'],
             refresh: true,
         }),
         tailwindcss(),