Remove anuraaga from maintainers list (#390)

Not at AWS anymore nor OTel org

Author: anuraaga

README.md

@@ -54,7 +54,6 @@ Approvers ([@open-telemetry/java-contrib-approvers](https://github.com/orgs/open
 
 Maintainers ([@open-telemetry/java-contrib-maintainers](https://github.com/orgs/open-telemetry/teams/java-contrib-maintainers)):
 
-- [Anuraag Agrawal](https://github.com/anuraaga), AWS
 - [Jack Berg](https://github.com/jack-berg), New Relic
 - [Mateusz Rzeszutek](https://github.com/mateuszrzeszutek), Splunk
 - [Nikita Salnikov-Tarnovski](https://github.com/iNikem), Splunk