remove NoneLoadBalancerCacheManager.java

spring-cloud-alibaba-starters/spring-cloud-starter-alibaba-nacos-discovery/src/main/java/com/alibaba/cloud/nacos/loadbalancer/NoneLoadBalancerCacheManager.java

@@ -1,45 +0,0 @@
-/*
- * Copyright 2013-2018 the original author or authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      https://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.alibaba.cloud.nacos.loadbalancer;
-
-import java.util.Collection;
-
-import org.springframework.cache.Cache;
-import org.springframework.cloud.loadbalancer.cache.LoadBalancerCacheManager;
-
-/**
- * Don't cache.<br>
- * <br>
- * 1. LoadBalancerCache causes information such as the weight of the service instance to
- * be changed without immediate effect.<br>
- * 2. Nacos itself supports caching.
- *
- * @author XuDaojie
- * @since 2021.1
- */
-public class NoneLoadBalancerCacheManager implements LoadBalancerCacheManager {
-
-	@Override
-	public Cache getCache(String name) {
-		return null;
-	}
-
-	@Override
-	public Collection<String> getCacheNames() {
-		return null;
-	}
-}