🔨 [FIX] Laravel 6 & Composer dependency incompatibility

- Removes unneeded composer dependencies (Fixes #85)

Author: Quinten

composer.json

@@ -12,11 +12,7 @@
   "minimum-stability": "stable",
   "require": {
     "php": "^7.1",
-    "composer/composer": "dev-master",
     "laravel/framework": ">=5.6",
-    "ext-pdo": "*",
-    "ext-curl": "*",
-    "ext-json": "*"
   },
   "extra": {
     "laravel": {