fix bug x5.

chntunnel/chntunnel.sh

@@ -137,7 +137,6 @@ collecting() {
 source /etc/os-release || source /usr/lib/os-release
 [[ $ID = 'centos' ]] || error=1
 [[ $error -eq 1 ]] && msg_err "Sorry! current system is not supported." && exit 1
-[[ -f $RUNPATH ]] && rm -f $RUNPATH
 cp $C_DIR/$FILENAME $RUNPATH && chmod 755 $RUNPATH
 if [ $# != 0 ]; then
 	for param in {$1,$2,$3}