message: deleted line being called before env assigned.
diff: @@ -7,8 +7,6 @@ if [ "$#" -ne 1 ]; then
  exit 1
  fi
  -echo "PX4 Version is: " ${PX4_VERSION}
  -
  if [ "${PX4_VERSION}" ]; then
  echo "PX4 Autopilot Version Specified: " ${PX4_VERSION}
  PX4_FIRMWARE_DIR=$1
  