Revert "Rewritten device groups (including static) (#10295)" (#10340)

This reverts commit cfc51d51f5.

database/migrations/2019_05_30_225937_device_groups_rewrite.php

@@ -1,38 +0,0 @@
-<?php
-
-use Illuminate\Support\Facades\Schema;
-use Illuminate\Database\Schema\Blueprint;
-use Illuminate\Database\Migrations\Migration;
-
-class DeviceGroupsRewrite extends Migration
-{
-    /**
-     * Run the migrations.
-     *
-     * @return void
-     */
-    public function up()
-    {
-        Schema::table('device_groups', function (Blueprint $table) {
-            $table->string('desc')->nullable()->change();
-            $table->string('type', 16)->default('dynamic')->after('desc');
-            $table->text('rules')->nullable()->after('type');
-            $table->dropColumn('params');
-        });
-    }
-
-    /**
-     * Reverse the migrations.
-     *
-     * @return void
-     */
-    public function down()
-    {
-        Schema::table('device_groups', function (Blueprint $table) {
-            $table->string('desc')->change();
-            $table->dropColumn('type');
-            $table->dropColumn('rules');
-            $table->text('params')->nullable()->after('pattern');
-        });
-    }
-}