Updates readme

Signed-off-by: Daniel Kastl <daniel@georepublic.de>

Author: dkastl

README.md

@@ -47,7 +47,6 @@ See [all releases](https://github.com/gtt-project/redmine_gtt_export/releases) w
 
 - [Jens Kraemer](https://github.com/jkraemer)
 - [Daniel Kastl](https://github.com/dkastl)
-- [Thibault Mutabazi](https://github.com/eyewritecode)
 - [Ko Nagase](https://github.com/sanak)
 - ... [and others](https://github.com/gtt-project/redmine_gtt_export/graphs/contributors)