Update the README to clarify component ownership

This represents more closely the actual maintenance model.

README.md

@@ -45,36 +45,24 @@ The PX4 Dev Team syncs up on a [weekly dev call](https://dev.px4.io/en/contribut
   * Communication Architecture
     * [Beat Kueng](https://github.com/bkueng)
     * [Julian Oes](https://github.com/JulianOes)
-  * UI / UX
-    * [Donald Gagne](https://github.com/DonLakeFlyer)
+  * UI in QGroundControl
     * [Gus Grubba](https://github.com/dogmaphobic)
   * [Multicopter Flight Control](https://github.com/PX4/Firmware/labels/multicopter)
-    * [Dennis Mannhart](https://github.com/Stifael)
+    * [Mathieu Bresciani](https://github.com/bresch)
+  * [Multicopter Software Architecture](https://github.com/PX4/Firmware/labels/multicopter)
     * [Matthias Grob](https://github.com/MaEtUgR)
   * [VTOL Flight Control](https://github.com/PX4/Firmware/labels/vtol)
-    * [Daniel Agar](https://github.com/dagar)
-    * [Mathieu Bresciani](https://github.com/bresch)
-    * [Sander Smeets](https://github.com/sanderux)
     * [Roman Bapst](https://github.com/tumbili)
-    * [Andreas Antener](https://github.com/AndreasAntener)
   * [Fixed Wing Flight Control](https://github.com/PX4/Firmware/labels/fixedwing)
-    * [Daniel Agar](https://github.com/dagar)
-    * [Paul Riseborough](https://github.com/priseborough)
-  * Racers - [Matthias Grob](https://github.com/MaEtUgR)
-  * OS / drivers - [David Sidrane](https://github.com/davids5)
-  * [UAVCAN](https://github.com/PX4/Firmware/labels/uavcan) / Industrial - [Pavel Kirienko](https://github.com/pavel-kirienko)
-  * [State Estimation](https://github.com/PX4/Firmware/issues?q=is%3Aopen+is%3Aissue+label%3A%22state+estimation%22) - [James Goppert](https://github.com/jgoppert), [Paul Riseborough](https://github.com/priseborough)
+    * [Roman Bapst](https://github.com/tumbili)
+  * OS / NuttX [David Sidrane](https://github.com/davids5)
+  * Driver Architecture [Daniel Agar](https://github.com/dagar)
+  * Commander Architecture [Julian Oes](https://github.com/julianoes)
+  * [UAVCAN](https://github.com/PX4/Firmware/labels/uavcan) [Daniel Agar](https://github.com/dagar)
+  * [State Estimation](https://github.com/PX4/Firmware/issues?q=is%3Aopen+is%3Aissue+label%3A%22state+estimation%22) - [Paul Riseborough](https://github.com/priseborough)
   * Vision based navigation
-    * [Christoph Tobler](https://github.com/ChristophTobler)
-    * [Mohammed Kabir](https://github.com/mhkabir)
+    * [Julian Kent](https://github.com/jkflying)
   * Obstacle Avoidance - [Martina Rivizzigno](https://github.com/mrivi)
-  * [Snapdragon](https://github.com/PX4/Firmware/labels/snapdragon)
-    * [Christoph Tobler](https://github.com/ChristophTobler)
-  * [Intel Aero](https://github.com/PX4/Firmware/labels/intel%20aero)
-    * [Sugnan Prabhu](https://github.com/sugnanprabhu)
-    * [José Roberto de Souza](https://github.com/zehortigoza)
-  * [Raspberry Pi / Navio](https://github.com/PX4/Firmware/labels/raspberry_pi) - [Beat Kueng](https://github.com/bkueng)
-  * [Airmind MindPX / MindRacer](https://github.com/PX4/Firmware/labels/mindpx) - [Henry Zhang](https://github.com/iZhangHui)
   * RTPS/ROS2 Interface - [Nuno Marques](https://github.com/TSC21)
 
 See also [About Us](http://px4.io/about-us/#development_team) (px4.io) and the [contributors list](https://github.com/PX4/Firmware/graphs/contributors) (Github).