Revert "新增DataCSV的Unit Test"

This reverts commit 7f92f191f2059f75cd8883ece085fa8dcde09e1b.
	modified:   Large and Open Source Project/src/DataCSV.java
	modified:   Large and Open Source Project/src/LnOS.java
Merge branch 'master' of https://github.com/tp6m4xup6/group_3