composer remove clue/block-react

This package is abandoned and no longer maintained.

Also, on PHP 8.5 + `ICINGAWEB_ENVIRONMENT=dev`, the Icinga Web landing page complains: "Deprecated: Clue\React\Block\sleep(): Implicitly marking parameter $loop as nullable is deprecated, the explicit nullable type must be used instead"

Author: Al2Klimov

composer.json

@@ -19,7 +19,6 @@
     "require": {
         "php": ">=8.2",
         "ext-curl": "*",
-        "clue/block-react": "^1.5",
         "clue/connection-manager-extra": "^1.3",
         "clue/http-proxy-react": "^1.9",
         "clue/mq-react": "^1.7",