去除无用引用

src/main/java/com/fdkankan/ucenter/UserCenterApplication.java

@@ -1,7 +1,6 @@
 package com.fdkankan.ucenter;
 
 import com.fdkankan.ucenter.common.constants.NacosProperty;
-import com.fdkankan.ucenter.common.constants.ShellCmd;
 import org.mybatis.spring.annotation.MapperScan;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.boot.CommandLineRunner;