Fix the clean up machine issues and remove unused files

Change-Id: Id771af885c14eb56a1b918ffdb58f7a0cbea8da7
diff --git a/jjb/OnosSystemTest/cho-clean-up.sh b/jjb/OnosSystemTest/cho-clean-up.sh
index a21a274..c83f223 100644
--- a/jjb/OnosSystemTest/cho-clean-up.sh
+++ b/jjb/OnosSystemTest/cho-clean-up.sh
@@ -1,7 +1,5 @@
 #!/bin/bash
 
-source ./clean-up.sh
-
 echo -e "\n Before clean up disk usage: \n"
 df -h
 
@@ -29,4 +27,4 @@
 done
 
 echo -e "\n After clean up disk usage:\n"
-df -h
\ No newline at end of file
+df -h