update package.xml

Author: Serafadam

package.xml

@@ -4,7 +4,6 @@
     <description>DepthAI core is a C++ library which comes with firmware and an API to interact with
         OAK Platform</description>
 
-    <maintainer email="adam.serafin@luxonis.com">Adam Serafin</maintainer>
     <author email="martin@luxonis.com">Martin Peterlin</author>
 
     <license>MIT</license>