Clean up composer.json after removing the last MongoDB adapter

composer.json

@@ -36,19 +36,15 @@
     "symfony/http-foundation": "^4.3"
   },
   "require-dev": {
-    "ext-mongodb": "^1.6",
     "christeredvartsen/testfs": "^0.3.0",
     "doctrine/dbal": "^2.10",
     "imbo/behat-api-extension": "^3.0",
     "imbo/imbo-filesystem-adapters": "dev-main",
     "imbo/imbo-mongodb-adapters": "dev-main",
     "micheh/psr7-cache": "^0.5",
-    "mongodb/mongodb": "^1.6",
     "phpunit/phpunit": "^9.2"
   },
   "suggest": {
-    "ext-mongodb": "Enables usage of MongoDB and GridFS as database and image storage. version: ^1.6",
-    "mongodb/mongodb": "Enables usage of MongoDB and GridFS as database and image storage. Recommended version: ^1.5",
     "imbo/imbo-metadata-cache": "Enabled caching of metadata through an event listener. Recommended version ^1.0",
     "doctrine/dbal": "Enables usage of using RDMS for storing data (and optionally images). Recommended version: ^2.9",
     "imbo/imbo-s3-adapters": "Enables usage of AWS S3 for storing images",
@@ -63,8 +59,7 @@
   },
   "autoload-dev": {
     "classmap": [
-      "features/bootstrap/imbo-configs",
-      "tests/Storage"
+      "features/bootstrap/imbo-configs"
     ],
     "psr-4": {
       "Imbo\\": "tests/",