cleanup composer config

Author: renickbuettner

composer.json

@@ -5,7 +5,6 @@
   "license": "MIT",
   "require": {
     "php": ">=7.4",
-    "october/system": "^2.1|^3.0",
     "composer/installers": "~1.0",
     "matomo/matomo-php-tracker": "^3.0.4",
     "visualappeal/matomo-php-api": "^1.6"