Drop stale replace directive on otelgrpc (#53117)

### What does this PR do?
Remove the `v0.60.0` version pin on `otelgrpc`, thus making `v0.69.0` actual.

### Motivation
kubernetes/apiserver@b887c9e ("Drop usages of deprecated otelgrpc methods") was named as the removal condition:
```
// TODO(songy23): remove this once kubernetes/apiserver@b887c9e is brought to agent
```

That commit indeed first landed in `k8s.io/apiserver v0.34.0`.

It turns out that a number of PRs had put the agent way past that threshold:
| PR     | `k8s.io/apiserver`         |
|--------|----------------------------|
| #37844 | v0.32.2 -> **v0.34.1**     |
| #42171 |         -> v0.35.0-alpha.0 |
| #46808 |         -> v0.35.0         |
| #48796 |         -> v0.35.3         |
| #49973 |         -> v0.35.4         |
| #51049 |         -> v0.35.5         |

Dropping the stale `replace` directive is therefore safe and sound.

Co-authored-by: regis.desgroppes <regis.desgroppes@datadoghq.com>

Author: rdesgroppes

LICENSE-3rdparty.csv

@@ -2991,11 +2991,13 @@ core,go.opentelemetry.io/otel/semconv/v1.26.0,Apache-2.0,Copyright The OpenTelem
 core,go.opentelemetry.io/otel/semconv/v1.27.0,Apache-2.0,Copyright The OpenTelemetry Authors
 core,go.opentelemetry.io/otel/semconv/v1.37.0,Apache-2.0,Copyright The OpenTelemetry Authors
 core,go.opentelemetry.io/otel/semconv/v1.37.0/goconv,Apache-2.0,Copyright The OpenTelemetry Authors
+core,go.opentelemetry.io/otel/semconv/v1.37.0/rpcconv,Apache-2.0,Copyright The OpenTelemetry Authors
 core,go.opentelemetry.io/otel/semconv/v1.38.0,Apache-2.0,Copyright The OpenTelemetry Authors
 core,go.opentelemetry.io/otel/semconv/v1.40.0,Apache-2.0,Copyright The OpenTelemetry Authors
 core,go.opentelemetry.io/otel/semconv/v1.41.0,Apache-2.0,Copyright The OpenTelemetry Authors
 core,go.opentelemetry.io/otel/semconv/v1.41.0/httpconv,Apache-2.0,Copyright The OpenTelemetry Authors
 core,go.opentelemetry.io/otel/semconv/v1.41.0/otelconv,Apache-2.0,Copyright The OpenTelemetry Authors
+core,go.opentelemetry.io/otel/semconv/v1.41.0/rpcconv,Apache-2.0,Copyright The OpenTelemetry Authors
 core,go.opentelemetry.io/otel/semconv/v1.5.0,Apache-2.0,Copyright The OpenTelemetry Authors
 core,go.opentelemetry.io/otel/semconv/v1.6.1,Apache-2.0,Copyright The OpenTelemetry Authors
 core,go.opentelemetry.io/otel/semconv/v1.9.0,Apache-2.0,Copyright The OpenTelemetry Authors

go.mod

@@ -1166,9 +1166,6 @@ require (
 	go.yaml.in/yaml/v4 v4.0.0-rc.4 // indirect
 )
 
-// TODO(songy23): remove this once https://github.com/kubernetes/apiserver/commit/b887c9ebecf558a2001fc5c5dbd5c87fd672500c is brought to agent
-replace go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc => go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.60.0
-
 replace github.com/vishvananda/netlink => github.com/DataDog/netlink v1.0.1-0.20240223195320-c7a4f832a3d1
 
 // use datadog fork of vault/api/auth/aws to reduce binary size for secret-generic-connector