Moved tinker out to an external package (#17002)

composer.json

@@ -25,7 +25,6 @@
         "mtdowling/cron-expression": "~1.0",
         "nesbot/carbon": "~1.20",
         "paragonie/random_compat": "~1.4|~2.0",
-        "psy/psysh": "0.7.*|0.8.*",
         "ramsey/uuid": "~3.0",
         "swiftmailer/swiftmailer": "~5.1",
         "symfony/console": "~3.2",
@@ -104,6 +103,7 @@
         "doctrine/dbal": "Required to rename columns and drop SQLite columns (~2.4).",
         "fzaninotto/faker": "Required to use the eloquent factory builder (~1.4).",
         "guzzlehttp/guzzle": "Required to use the Mailgun and Mandrill mail drivers and the ping methods on schedules (~5.3|~6.0).",
+        "laravel/tinker": "Required to use the tinker console command (~1.0).",
         "league/flysystem-aws-s3-v3": "Required to use the Flysystem S3 driver (~1.0).",
         "league/flysystem-rackspace": "Required to use the Flysystem Rackspace driver (~1.0).",
         "pda/pheanstalk": "Required to use the beanstalk queue driver (~3.0).",

src/Illuminate/Foundation/Providers/ArtisanServiceProvider.php

@@ -10,7 +10,6 @@
 use Illuminate\Auth\Console\ClearResetsCommand;
 use Illuminate\Cache\Console\CacheTableCommand;
 use Illuminate\Foundation\Console\ServeCommand;
-use Illuminate\Foundation\Console\TinkerCommand;
 use Illuminate\Queue\Console\FailedTableCommand;
 use Illuminate\Foundation\Console\AppNameCommand;
 use Illuminate\Foundation\Console\JobMakeCommand;
@@ -105,7 +104,6 @@ class ArtisanServiceProvider extends ServiceProvider
         'ScheduleFinish' => 'Illuminate\Console\Scheduling\ScheduleFinishCommand',
         'ScheduleRun' => 'Illuminate\Console\Scheduling\ScheduleRunCommand',
         'StorageLink' => 'command.storage.link',
-        'Tinker' => 'command.tinker',
         'Up' => 'command.up',
         'ViewClear' => 'command.view.clear',
     ];
@@ -797,18 +795,6 @@ protected function registerTestMakeCommand()
         });
     }
 
-    /**
-     * Register the command.
-     *
-     * @return void
-     */
-    protected function registerTinkerCommand()
-    {
-        $this->app->singleton('command.tinker', function () {
-            return new TinkerCommand;
-        });
-    }
-
     /**
      * Register the command.
      *