diff --git a/tools/acrntrace/scripts/pre_process.sh b/tools/acrntrace/scripts/pre_process.sh
deleted file mode 100755
index 80245c288..000000000
--- a/tools/acrntrace/scripts/pre_process.sh
+++ /dev/null
@@ -1,33 +0,0 @@
-#!/bin/bash
-
-IFILE=$1
-STR=$2
-BAK_FILE=${IFILE}.orig
-
-if [ ! -f $BAK_FILE ]; then
-	cp $IFILE $BAK_FILE
-fi
-
-echo $IFILE, $BAK_FILE, $STR
-
-FIRST_LINE=$(grep -n $STR -m 1 $IFILE | awk -F: '{print $1}')
-LAST_LINE=$(grep -n $STR $IFILE | tail -1 | awk -F: '{print $1}')
-TOTAL_LINE=$(wc -l $IFILE | awk '{print $1}')
-
-echo $FIRST_LINE, $LAST_LINE, $TOTAL_LINE
-
-if [[ $FIRST_LINE -ge $LAST_LINE || $LAST_LINE -gt $TOTAL_LINE ]]; then
-	exit 1
-fi
-
-if [[ $LAST_LINE -lt $TOTAL_LINE ]]; then
-	let LAST_LINE=$((LAST_LINE))+1
-	echo "sed -i ${LAST_LINE},${TOTAL_LINE}d $IFILE"
-	sed -i ${LAST_LINE}','${TOTAL_LINE}'d' $IFILE
-fi
-
-if [[ $FIRST_LINE -gt 2 ]]; then
-	let FIRST_LINE=$((FIRST_LINE))-1
-	echo "sed -i 2,${FIRST_LINE}d $IFILE"
-	sed -i '2,'${FIRST_LINE}'d' $IFILE
-fi