Double requirement given for pyyaml in requirement.txt
failed the run for prerequisites in setup.

Change-Id: I06b5ed34977dae77882de8aa2ba888f55cde1b55
diff --git a/src/test/setup/requirements.txt b/src/test/setup/requirements.txt
index e6c8dab..94a195c 100644
--- a/src/test/setup/requirements.txt
+++ b/src/test/setup/requirements.txt
@@ -3,7 +3,6 @@
 monotonic
 configObj
 docker-py
-pyyaml
 nsenter
 pyroute2
 netaddr