Removes ghost import

Author: raphaelstolt

src/Commands/ValidateCommand.php

@@ -4,7 +4,6 @@
 
 namespace Stolt\LeanPackage\Commands;
 
-use function PHPUnit\Framework\stringContains;
 use SebastianBergmann\Diff\Differ;
 use SebastianBergmann\Diff\Output\UnifiedDiffOutputBuilder;
 use SplFileInfo;