appliance: during cleanup remove veewee and vbox txt files

Signed-off-by: Rohit Yadav <bhaisaab@apache.org>
diff --git a/tools/appliance/definitions/systemvmtemplate/zerodisk.sh b/tools/appliance/definitions/systemvmtemplate/zerodisk.sh
index cb79308..25bd8c4 100644
--- a/tools/appliance/definitions/systemvmtemplate/zerodisk.sh
+++ b/tools/appliance/definitions/systemvmtemplate/zerodisk.sh
@@ -1,6 +1,7 @@
 # Clean up stuff copied in by veewee
 rm -fv /root/*.iso
 rm -fv /root/base.sh /root/cleanup.sh /root/postinstall.sh /root/zerodisk.sh
+rm -fv .veewee_version .veewee_params .vbox_version
 
 echo "Cleaning up"