Apply suggestion from @christophfroehlich

Author: christophfroehlich

tl_expected/package.xml

@@ -10,11 +10,6 @@
   <maintainer email="nathanbrooks@picknik.ai">Nathan Brooks</maintainer>
   <maintainer email="shaurya.kumar@picknik.ai">Shaurya Kumar</maintainer>
 
-  <maintainer email="bence.magyar.robotics@gmail.com">bmagyar</maintainer>
-  <maintainer email="christoph.froehlich@ait.ac.at">christophfroehlich</maintainer>
-  <maintainer email="nathanbrooks@picknik.ai">Nathan Brooks</maintainer>
-  <maintainer email="shaurya.kumar@picknik.ai">Shaurya Kumar</maintainer>
-
   <author>Sy Brand</author>
   <author email="maybe@tylerjw.dev">Tyler Weaver</author>
   <license>CC0-1.0</license>