Fix import order in benchmark.php

Author: dereuromark

tests/benchmark_alternatives/benchmark.php

@@ -26,16 +26,12 @@
 use Composer\InstalledVersions;
 use Djot\DjotConverter;
 use League\CommonMark\CommonMarkConverter;
-use League\CommonMark\GithubFlavoredMarkdownConverter;
 use League\CommonMark\Environment\Environment;
 use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension;
-use League\CommonMark\Extension\GithubFlavoredMarkdownExtension;
 use League\CommonMark\Extension\Footnote\FootnoteExtension;
+use League\CommonMark\Extension\GithubFlavoredMarkdownExtension;
 use League\CommonMark\Extension\SmartPunct\SmartPunctExtension;
-use League\CommonMark\Extension\Strikethrough\StrikethroughExtension;
-use League\CommonMark\Extension\Table\TableExtension;
-use League\CommonMark\Extension\TaskList\TaskListExtension;
-use League\CommonMark\Extension\Autolink\AutolinkExtension;
+use League\CommonMark\GithubFlavoredMarkdownConverter;
 use League\CommonMark\MarkdownConverter;
 use Michelf\Markdown;
 use Michelf\MarkdownExtra;