Remove installation of boto - not needed anymore

Change-Id: Ie5226eaa5320510ddc585b8360b62cbb6a3a0dcc
diff --git a/jjb/onos/onos-bazel-release-build.sh b/jjb/onos/onos-bazel-release-build.sh
index 6dd846a..9f43511 100644
--- a/jjb/onos/onos-bazel-release-build.sh
+++ b/jjb/onos/onos-bazel-release-build.sh
@@ -28,9 +28,6 @@
 git config user.email "jenkins@onlab.us"
 git config user.name "ONOS Jenkins User"
 
-# install boto
-pip install -U boto
-
 # stage the maven settings
 mkdir -p ~/.m2
 mv settings.xml ~/.m2/settings.xml