Revert "Merge pull request #139 from utopia-php/fix-dir-exists-0.18.x"

This reverts commit ba1ddb1, reversing
changes made to 3d8ce53.

Author: ChiragAgg5k

tests/Storage/S3Base.php

@@ -20,11 +20,6 @@ abstract protected function getAdapterName(): string;
      */
     abstract protected function getAdapterDescription(): string;
 
-    /**
-     * @return string
-     */
-    abstract protected function getAdapterType(): string;
-
     /**
      * @var S3
      */