fix: remove getEnv method from Platform

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: loks0n

src/Platform/Platform.php

@@ -345,17 +345,4 @@ public function setWorker(Server $worker): self
         return $this;
     }
 
-    /**
-     * Get env
-     *
-     * Method for querying env parameters. If $key is not found $default value will be returned.
-     *
-     * @param  string  $key
-     * @param  string|null  $default
-     * @return mixed
-     */
-    public function getEnv(string $key, ?string $default = null): mixed
-    {
-        return $_SERVER[$key] ?? $default;
-    }
 }