Only cleanup the install path once

I'm not sure how this extra line got in here.

Change-Id: Icd1ca3330c38673e79f6d5cca6cff02882798684
diff --git a/setup.sh b/setup.sh
index 3b8a81a..97d7876 100755
--- a/setup.sh
+++ b/setup.sh
@@ -38,7 +38,6 @@
 
 # Install the needed packages and setup the environment
 apt-get install -y gcc openjdk-7-jdk ant maven zip
-rm -rf $path
 echo "0 0 * * * /usr/pb/setup.sh build >> /var/log/pb.log" | crontab -
 adduser --uid 1337 --disabled-password --gecos ,,, worker