remove dusk and install browser kit test suite

tests/Browser/ExampleTest.php

-<?php
-
-namespace Tests\Browser;
-
-use Laravel\Dusk\Browser;
-use Tests\DuskTestCase;
-
-class ExampleTest extends DuskTestCase
-{
-    /**
-     * A basic browser test example.
-     *
-     * @return void
-     */
-    public function testBasicExample()
-    {
-        $this->browse(function (Browser $browser) {
-            $browser->visit('/')
-                    ->assertSee('Laravel');
-        });
-    }
-}

tests/Browser/Pages/HomePage.php

-<?php
-
-namespace Tests\Browser\Pages;
-
-use Laravel\Dusk\Browser;
-
-class HomePage extends Page
-{
-    /**
-     * Get the URL for the page.
-     *
-     * @return string
-     */
-    public function url()
-    {
-        return '/';
-    }
-
-    /**
-     * Assert that the browser is on the page.
-     *
-     * @param Browser $browser
-     *
-     * @return void
-     */
-    public function assert(Browser $browser)
-    {
-        //
-    }
-
-    /**
-     * Get the element shortcuts for the page.
-     *
-     * @return array
-     */
-    public function elements()
-    {
-        return [
-            '@element' => '#selector',
-        ];
-    }
-}

tests/Browser/Pages/Page.php

-<?php
-
-namespace Tests\Browser\Pages;
-
-use Laravel\Dusk\Page as BasePage;
-
-abstract class Page extends BasePage
-{
-    /**
-     * Get the global element shortcuts for the site.
-     *
-     * @return array
-     */
-    public static function siteElements()
-    {
-        return [
-            '@element' => '#selector',
-        ];
-    }
-}

tests/Browser/console/.gitignore

-*
-!.gitignore

tests/Browser/screenshots/.gitignore

-*
-!.gitignore