Remove milestone steps from release

[Kalaiselvi84]

What type of PR is this?

Uncomment only one /kind <> line, press enter to put that in a new line, and remove leading whitespace from that line:

/kind breaking
/kind bug
/kind cleanup
/kind documentation
/kind feature
/kind hotfix

What this PR does / Why we need it:

Which issue(s) this PR fixes:

Closes #2455

Special notes for your reviewer:

[google-oss-prow]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: gongmax, Kalaiselvi84
Once this PR has been reviewed and has the lgtm label, please assign alekser for approval. For more information see the Kubernetes Code Review Process.

The full list of commands accepted by this bot can be found here.

Needs approval from an approver in each of these files:

• OWNERS

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[agones-bot]

Build Succeeded 👏

Build Id: ec09e270-f973-4a04-9fbf-02a58e746084

The following development artifacts have been built, and will exist for the next 30 days:

• image: us-docker.pkg.dev/agones-images/ci/agones-controller:1.32.0-a8db4a7-amd64
• image: us-docker.pkg.dev/agones-images/ci/agones-sdk:1.32.0-a8db4a7-linux-amd64
• image: us-docker.pkg.dev/agones-images/ci/agones-ping:1.32.0-a8db4a7-amd64
• image: us-docker.pkg.dev/agones-images/ci/agones-allocator:1.32.0-a8db4a7-amd64
• Linux C++ SDK (build): agonessdk-1.32.0-a8db4a7-amd64-linux-arch_64.tar.gz
• SDK Server: agonessdk-server-1.32.0-a8db4a7-amd64.zip

A preview of the website (the last 30 builds are retained):

• https://a8db4a7-dot-preview-dot-agones-images.appspot.com/

To install this version:

• git fetch https://github.com/googleforgames/agones.git pull/3135/head:pr_3135 && git checkout pr_3135
• helm install agones ./install/helm/agones --namespace agones-system --agones.image.release=us-docker.pkg.dev/agones-images/ci --set agones.image.tag=1.32.0-a8db4a7-amd64

[google-oss-prow]

New changes are detected. LGTM label has been removed.

[agones-bot]

Build Succeeded 👏

Build Id: dcad106a-d847-4568-a7b0-9bf79150e66f

The following development artifacts have been built, and will exist for the next 30 days:

• image: us-docker.pkg.dev/agones-images/ci/agones-controller:1.32.0-007b05e-amd64
• image: us-docker.pkg.dev/agones-images/ci/agones-sdk:1.32.0-007b05e-linux-amd64
• image: us-docker.pkg.dev/agones-images/ci/agones-ping:1.32.0-007b05e-amd64
• image: us-docker.pkg.dev/agones-images/ci/agones-allocator:1.32.0-007b05e-amd64
• Linux C++ SDK (build): agonessdk-1.32.0-007b05e-amd64-linux-arch_64.tar.gz
• SDK Server: agonessdk-server-1.32.0-007b05e-amd64.zip

A preview of the website (the last 30 builds are retained):

• https://007b05e-dot-preview-dot-agones-images.appspot.com/

To install this version:

• git fetch https://github.com/googleforgames/agones.git pull/3135/head:pr_3135 && git checkout pr_3135
• helm install agones ./install/helm/agones --namespace agones-system --agones.image.release=us-docker.pkg.dev/agones-images/ci --set agones.image.tag=1.32.0-007b05e-amd64