Removing \r from generator in order to prevent ^M from being inserted in...

Each time I run php artisan ide-helper:generate ^M is inserted to the ending of several lines.  

Each function in _ide_helper.php looks like this:
```
public static function __construct($request = null){^M
                 Illuminate\Foundation\Application::__construct($request);^M
         }

        /**
         * Set the application request for the console environment.
         *
         * @return void
         * @static
         */
         public static function setRequestForConsoleEnvironment(){^M
                 Illuminate\Foundation\Application::setRequestForConsoleEnvironment();^M
         }
```

I've verified the same thing happens with several other people.  Each person I verified is running the command on an Ubuntu machine and for each person this pull request resolves the issue.