Remove xray sampler (open-telemetry#6187)

Resolve open-telemetry#5554

This package was deprecated in release
[v0.22.0](https://pkg.go.dev/go.opentelemetry.io/contrib/samplers/aws/[email protected])
on 2024-07-03. It is no longer supported and is being removed.

---------

Co-authored-by: Robert Pająk <[email protected]>

Author: MrAlias

CHANGELOG.md

@@ -23,12 +23,12 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 ### Fixed
 
 - Possible nil dereference panic in `go.opentelemetry.io/contrib/instrumentation/net/http/httptrace/otelhttptrace`. (#5965)
-- Non-200 HTTP status codes when retrieving sampling rules in `go.opentelemetry.io/contrib/samplers/aws/xray` now return an error. (#5718)
 
 ### Removed
 
 - The `Minimum` field of the `LogProcessor` in `go.opentelemetry.io/contrib/processors/minsev` is removed.
   Use `NewLogProcessor` to configure this setting. (#6116)
+- The deprecated `go.opentelemetry.io/contrib/samplers/aws/xray` package is removed. (#6187)
 
 <!-- Released section -->
 <!-- Don't change this section unless doing release -->

CODEOWNERS

@@ -67,7 +67,6 @@ propagators/jaeger/                                                     @open-te
 propagators/opencensus/                                                 @open-telemetry/go-approvers @dashpole
 propagators/ot/                                                         @open-telemetry/go-approvers @pellared
 
-samplers/aws/xray/                                                      @open-telemetry/go-approvers
 samplers/jaegerremote/                                                  @open-telemetry/go-approvers @yurishkuro
 samplers/probability/consistent/                                        @open-telemetry/go-approvers