Remove old Tag commands, refactor migration etc

app/Models/Taggable.php

@@ -1,79 +0,0 @@
-<?php
-
-/*
- * This file is part of Cachet.
- *
- * (c) Alt Three Services Limited
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace CachetHQ\Cachet\Models;
-
-use AltThree\Validator\ValidatingTrait;
-use Illuminate\Database\Eloquent\Model;
-
-/**
- * This is the taggable model class.
- *
- * @author James Brooks <james@alt-three.com>
- */
-class Taggable extends Model
-{
-    use ValidatingTrait;
-
-    /**
-     * The attributes that should be casted to native types.
-     *
-     * @var string[]
-     */
-    protected $casts = [
-        'id'            => 'int',
-        'tag_id'        => 'int',
-        'taggable_id'   => 'int',
-        'taggable_type' => 'string',
-    ];
-
-    /**
-     * The attributes that are mass assignable.
-     *
-     * @var array
-     */
-    protected $fillable = [
-        'tag_id',
-        'taggable_id',
-        'taggable_type',
-    ];
-
-    /**
-     * The validation rules.
-     *
-     * @var string[]
-     */
-    public $rules = [
-        'tag_id'        => 'required|int',
-        'taggable_id'   => 'required|int',
-        'taggable_type' => 'required|string',
-    ];
-
-    /**
-     * Get the tag relation.
-     *
-     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
-     */
-    public function tag()
-    {
-        return $this->belongsTo(Tag::class);
-    }
-
-    /**
-     * Get the taggable relation.
-     *
-     * @return \Illuminate\Database\Eloquent\Relations\MorphTo
-     */
-    public function taggable()
-    {
-        return $this->morphTo();
-    }
-}