Fix for prerequisites for cord/venv option

Change-Id: Ia0b69ac978220a16e65720d7eb601b4d85b3a11b
diff --git a/src/test/setup/prerequisites.sh b/src/test/setup/prerequisites.sh
index 2cf2c2b..cd6bcd1 100755
--- a/src/test/setup/prerequisites.sh
+++ b/src/test/setup/prerequisites.sh
@@ -14,11 +14,9 @@
             case "${OPTARG}" in
                 cord)
                     on_cord=1
-                    OPTIND=$(( $OPTIND + 1 ))
                     ;;
                 venv)
                     venv=1
-                    OPTIND=$(( $OPTIND + 1))
                     ;;
                 help)
                     usage