[receiver/vcenter] Feature gate "receiver.vcenter.emitPerfMetricsWithObjects" is still alpha

[atoulme]

Component(s)

receiver/vcenter

Describe the issue you're reporting

The README of vcenter receiver states:

1. v0.84.0, August 2023:

- The version of the receiver will keep default behavior.
- `receiver.vcenter.emitPerfMetricsWithObjects` is *disabled* by default.

2. v0.86.0, September 2023:

- The receiver will emit the `object` metric attribute by default
- `receiver.vcenter.emitPerfMetricsWithObjects` is *enabled* by default.

3. v0.88.0, October 2023:

- The feature gates are removed.
- Performance metrics will always include the `object` metric attribute.

However, the gate is still in alpha (1.).

[github-actions]

Pinging code owners:

• receiver/vcenter: @djaglowski @schmikei

See Adding Labels via Comments if you do not have permissions to add labels yourself.

[github-actions]

This issue has been inactive for 60 days. It will be closed in 60 days if there is no activity. To ping code owners by adding a component label, see Adding Labels via Comments, or if you are unsure of which component this issue relates to, please ping @open-telemetry/collector-contrib-triagers. If this issue is still relevant, please ping the code owners or leave a comment explaining why it is still relevant. Otherwise, please close it.

Pinging code owners:

• receiver/vcenter: @djaglowski @schmikei

See Adding Labels via Comments if you do not have permissions to add labels yourself.

[djaglowski]

Closed by #30616