Update README.md

Author: cgcostume

README.md

@@ -5,7 +5,6 @@ C++ library for pre-computing noise, and random sample-kernels.
 
 | Service | System | Compiler | Targets | Status |
 | ------- | ------ | -------- | ------- | ------ |
-| [Drone](https://drone.io/github.com/cginternals/glkernel) | Ubuntu 12.04 | GCC 4.8 | no tests | [![Build Status](https://drone.io/github.com/cginternals/glkernel/status.png)](https://drone.io/github.com/cginternals/glkernel/latest) |
 | Jenkins | Ubuntu 14.04 | GCC 4.8 | all, test | [![Build Status](http://jenkins.hpi3d.de/buildStatus/icon?job=glkernel-linux-gcc4.8)](http://jenkins.hpi3d.de/job/glkernel-linux-gcc4.8)|
 | Jenkins | Ubuntu 14.04 | GCC 4.9 | all, test | [![Build Status](http://jenkins.hpi3d.de/buildStatus/icon?job=glkernel-linux-gcc4.9)](http://jenkins.hpi3d.de/job/glkernel-linux-gcc4.9)|
 | Jenkins | Ubuntu 14.04 | GCC 5.3 | all, test | [![Build Status](http://jenkins.hpi3d.de/buildStatus/icon?job=glkernel-linux-gcc5.3)](http://jenkins.hpi3d.de/job/glkernel-linux-gcc5.3)|