readme: remove buildfarm status badges

There are no releases to show the status of ..

README.md

@@ -25,11 +25,9 @@ Status: [![Build Status](https://travis-ci.com/ros-industrial/robotiq.svg?branch
 
 ## ROS Buildfarm
 
-|         | Indigo Source | Indigo Debian | Kinetic Source | Kinetic Debian |  Melodic Source  |  Melodic Debian |
-|:-------:|:-------------------:|:-------------------:|:-------------------:|:-------------------:|:-------------------:|:-------------------:|
-| robotiq | [![not released](http://build.ros.org/buildStatus/icon?job=Isrc_uT__robotiq__ubuntu_trusty__source)](http://build.ros.org/view/Isrc_uT/job/Isrc_uT__robotiq__ubuntu_trusty__source/) | [![not released](http://build.ros.org/buildStatus/icon?job=Ibin_uT64__robotiq__ubuntu_trusty_amd64__binary)](http://build.ros.org/view/Ibin_uT64/job/Ibin_uT64__robotiq__ubuntu_trusty_amd64__binary/) | [![not released](http://build.ros.org/buildStatus/icon?job=Jsrc_uT__robotiq__ubuntu_trusty__source)](http://build.ros.org/view/Jsrc_uT/job/Jsrc_uT__robotiq__ubuntu_trusty__source/) | [![not released](http://build.ros.org/buildStatus/icon?job=Jbin_uT64__robotiq__ubuntu_trusty_amd64__binary)](http://build.ros.org/view/Jbin_uT64/job/Jbin_uT64__robotiq__ubuntu_trusty_amd64__binary/) | [![not released](http://build.ros.org/buildStatus/icon?job=Ksrc_uX__robotiq__ubuntu_xenial__source)](http://build.ros.org/view/Ksrc_uX/job/Ksrc_uX__robotiq__ubuntu_xenial__source/) | [![not released](http://build.ros.org/buildStatus/icon?job=Kbin_uX64__robotiq__ubuntu_xenial_amd64__binary)](http://build.ros.org/view/Kbin_uX64/job/Kbin_uX64__robotiq__ubuntu_xenial_amd64__binary/) | | [![not released](http://build.ros.org/buildStatus/icon?job=Ksrc_uX__robotiq__ubuntu_bounty__source)](http://build.ros.org/view/Ksrc_uX/job/Ksrc_uX__robotiq__ubuntu_bounty__source/) | [![not released](http://build.ros.org/buildStatus/icon?job=Kbin_uX64__robotiq__ubuntu_bounty_amd64__binary)](http://build.ros.org/view/Kbin_uX64/job/Kbin_uX64__robotiq__ubuntu_bounty_amd64__binary/) |
+There are no up-to-date releases of these packages available from the ROS buildfarm.
 
-[![support level: community](https://img.shields.io/badge/support%20level-community-lightgray.png)](http://rosindustrial.org/news/2016/10/7/better-supporting-a-growing-ros-industrial-software-platform)
+[![support level: community](https://img.shields.io/badge/support%20level-community-lightgray.svg)](http://rosindustrial.org/news/2016/10/7/better-supporting-a-growing-ros-industrial-software-platform)
 
 Robotiq meta-package.  See the [ROS wiki][] page for more information.