删除powerjob相关

ruoyi-modules/ruoyi-job/src/main/java/org/dromara/job/package-info.java

@@ -1,6 +1 @@
-/**
- * 演示用例
- * copy from https://github.com/PowerJob/PowerJob/tree/master/powerjob-worker-samples/src/main/java/tech/powerjob/samples
- */
-
 package org.dromara.job;