Remove more leftover

Author: Meldiron

composer.json

@@ -16,8 +16,7 @@
     },
     "autoload-dev": {
         "psr-4": {
-            "Tests\\E2E\\": "tests/Queue/E2E",
-            "Tests\\Unit\\": "tests/Queue/Unit"
+            "Tests\\E2E\\": "tests/Queue/E2E"
         }
     },
     "scripts":{