Update README.md

README.md

@@ -36,13 +36,13 @@ Please refer to the [user documentation](http://px4.io/user-guide/) and [user fo
 ## Maintenance Team
 
   * Project / Founder - [Lorenz Meier](http://github.com/LorenzMeier)
-  * Dev Call - [Mark Whitehorn](http://github.com/kd0aij), [Ramon Roche](http://github.com/mrpollo)
+  * Dev Call - [Ramon Roche](http://github.com/mrpollo)
   * Communication Architecture - [Beat Kueng](http://github.com/bkueng), [Julian Oes](http://github.com/JulianOes)
   * UI / UX - [Gus Grubba](http://github.com/dogmaphobic)
   * Multicopter Flight Control - [Dennis Mannhart](http://github.com/Stifael), [Matthias Grob](http://github.com/MaEtUgR)
   * VTOL Flight Control - [Roman Bapst](http://github.com/tumbili), [Andreas Antener](http://github.com/AndreasAntener), [Sander Smeets](http://github.com/sanderux)
   * Fixed Wing Flight Control - [Daniel Agar](http://github.com/dagar), [Paul Riseborough](http://github.com/priseborough)
-  * Racers - [Anton Matosov](http://github.com/anton-matosov) / [Mark Whitehorn](http://github.com/kd0aij)
+  * Racers - [Anton Matosov](http://github.com/anton-matosov)
   * OS / drivers - [David Sidrane](http://github.com/david_s5)
   * UAVCAN / Industrial - [Pavel Kirienko](http://github.com/pavel-kirienko)
   * State Estimation - [James Goppert](http://github.com/jgoppert), [Paul Riseborough](http://github.com/priseborough)