Remove anuraaga from maintainers list (#6301)

Not at AWS anymore nor OTel org

README.md

@@ -149,7 +149,6 @@ Approvers ([@open-telemetry/java-instrumentation-approvers](https://github.com/o
 
 Maintainers ([@open-telemetry/java-instrumentation-maintainers](https://github.com/orgs/open-telemetry/teams/java-instrumentation-maintainers)):
 
-- [Anuraag Agrawal](https://github.com/anuraaga), AWS
 - [Lauri Tulmin](https://github.com/laurit), Splunk
 - [Mateusz Rzeszutek](https://github.com/mateuszrzeszutek), Splunk
 - [Nikita Salnikov-Tarnovski](https://github.com/iNikem), Splunk