remove unused executor

.idea/misc.xml

-<?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="ProjectRootManager" version="2" languageLevel="JDK_17" default="true" project-jdk-name="20" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/out" />

src/main/kotlin/Main.kt

@@ -6,7 +6,6 @@ import java.net.InetSocketAddress
 fun main(args: Array<String>) {
     val server = HttpServer.create(InetSocketAddress(8000), 0)
     server.createContext("/", MyHandler())
-    server.executor = null // creates a default executor
     server.start()
     println("Server listing on port 8000")
 }