Delete useless classes.

dynamic-threadpool-spring-boot-starter/src/main/java/com/github/dynamic/threadpool/starter/core/DynamicThreadPoolClient.java

@@ -1,10 +0,0 @@
-package com.github.dynamic.threadpool.starter.core;
-
-/**
- * Dynamic tp client.
- *
- * @author chen.ma
- * @date 2021/7/13 21:50
- */
-public interface DynamicThreadPoolClient {
-}