fix: remove illegal package version key from "composer.json"

composer.json

@@ -35,6 +35,5 @@
     "psr-4": {
       "QUI\\ERP\\": "src/QUI/ERP"
     }
-  },
-  "version": "2.1.1"
-}
\ No newline at end of file
+  }
+}