Eliminar archivos mal configurados

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

class subgrupoController extends Controller

{

    //

}

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;

use Illuminate\Database\Eloquent\Model;

class subgrupo extends Model

{

    use HasFactory;

}

<?php

use Illuminate\Database\Migrations\Migration;

use Illuminate\Database\Schema\Blueprint;

use Illuminate\Support\Facades\Schema;

return new class extends Migration

{

    /**

     * Run the migrations.

     */

    public function up(): void

    {

        Schema::create('subgrupos', function (Blueprint $table) {

            $table->id();

            $table->unsignedBigInteger('grupo_id')->nullable();

            $table->unsignedBigInteger('subgrupo_id')->nullable();

            $table->timestamps();

            $table->foreign('grupo_id')->references('id')->on('grupos')->nullable();

            $table->foreign('subgrupo_id')->references('id')->on('subgrupos')->nullable();

        });

    }

    /**

     * Reverse the migrations.

     */

    public function down(): void

    {

        Schema::dropIfExists('subgrupos');

    }

};