Revert "Always wait after an unzip completes to try and fix virtualbox issues, refs #9945"

This reverts commit 3556f6efa5.

src/Composer/Downloader/ArchiveDownloader.php

@@ -13,7 +13,6 @@
 namespace Composer\Downloader;
 
 use Composer\Package\PackageInterface;
-use Composer\Util\Platform;
 use Symfony\Component\Finder\Finder;
 use React\Promise\PromiseInterface;
 use Composer\DependencyResolver\Operation\InstallOperation;
@@ -137,8 +136,6 @@ abstract class ArchiveDownloader extends FileDownloader
                 }
             };
 
-            Platform::workaroundFilesystemIssues();
-
             $renameAsOne = false;
             if (!file_exists($path) || ($filesystem->isDirEmpty($path) && $filesystem->removeDirectoryPhp($path))) {
                 $renameAsOne = true;