Remove obsolete code

See gh-34331

spring-websocket/src/main/java/org/springframework/web/socket/client/standard/StandardWebSocketClient.java

@@ -16,10 +16,8 @@
 
 package org.springframework.web.socket.client.standard;
 
-import java.net.InetAddress;
 import java.net.InetSocketAddress;
 import java.net.URI;
-import java.net.UnknownHostException;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
@@ -186,15 +184,6 @@ private static List<Extension> adaptExtensions(List<WebSocketExtension> extensio
 		return result;
 	}
 
-	private static InetAddress getLocalHost() {
-		try {
-			return InetAddress.getLocalHost();
-		}
-		catch (UnknownHostException ex) {
-			return InetAddress.getLoopbackAddress();
-		}
-	}
-
 	private static int getPort(URI uri) {
 		if (uri.getPort() == -1) {
 			String scheme = uri.getScheme().toLowerCase(Locale.ROOT);