Move Michael Maxwell to Emeritus (open-telemetry#800)

Co-authored-by: Carter Socha <43380952+cartersocha@users.noreply.github.com>
Co-authored-by: Juliano Costa <julianocosta89@outlook.com>

Author: 3 people

README.md

@@ -82,14 +82,14 @@ documentation. Our [SIG Calls](CONTRIBUTING.md#join-a-sig-call) are Mondays at
 [Approvers](https://github.com/open-telemetry/community/blob/main/community-membership.md#approver)
 ([@open-telemetry/demo-approvers](https://github.com/orgs/open-telemetry/teams/demo-approvers)):
 
-- [Michael Maxwell](https://github.com/mic-max), Microsoft
 - [Mikko Viitanen](https://github.com/mviitane), Dynatrace
 - [Penghan Wang](https://github.com/wph95), AppDynamics
 - [Reiley Yang](https://github.com/reyang), Microsoft
 - [Ziqi Zhao](https://github.com/fatsheep9146), Alibaba
 
 Emeritus:
 
+- [Michael Maxwell](https://github.com/mic-max)
 - [Morgan McLean](https://github.com/mtwo)
 
 ### Thanks to all the people who have contributed