Remove usage of SebastianBergmann\Version. Was causing an error and providing little benefit. (#3671)

Author: weitzman

composer.json

@@ -37,7 +37,6 @@
     "league/container": "~2",
     "psr/log": "~1.0",
     "psy/psysh": "~0.6",
-    "sebastian/version": "^1|^2",
     "symfony/config": "~2.2|^3",
     "symfony/console": "~2.7|^3",
     "symfony/event-dispatcher": "~2.7|^3",

src/Drush.php

@@ -9,7 +9,6 @@
 use Consolidation\SiteAlias\SiteAliasManager;
 use League\Container\ContainerInterface;
 use Psr\Log\LoggerInterface;
-use SebastianBergmann\Version;
 use Symfony\Component\Console\Application;
 use Symfony\Component\Console\Input\InputInterface;
 use Symfony\Component\Console\Output\OutputInterface;
@@ -81,8 +80,7 @@ public static function getVersion()
     {
         if (!static::$version) {
             $drush_info = static::drushReadDrushInfo();
-            $instance = new Version($drush_info['drush_version'], dirname(__DIR__));
-            static::$version = $instance->getversion();
+            static::$version = $drush_info['drush_version'];
         }
         return static::$version;
     }