build: remove illegal version keyword from composer.json

composer.json

 {
     "name": "quiqqer/test",
     "type": "quiqqer-plugin",
-    "version": "dev-dev",
     "description": "Its an installation test. This package do nothing. TEST STRING 6000 ew089f 0203 2003232 4",
     "license": "MIT",
     "authors": [