Cleanup composer file

Author: Martin de Keijzer

composer.json

@@ -21,8 +21,6 @@
     "require-dev": {
         "phpunit/phpunit": "^9.0",
         "mockery/mockery": "^1.4",
-        "guzzlehttp/guzzle": "^7.2",
-        "php-http/httplug": "^2.2",
         "php-http/discovery": "^1.13",
         "php-http/guzzle7-adapter": "^0.1.1",
         "php-http/message": "^1.11",