Remove redundant aad login commands from example section

[Tejaswikandula]

---

This checklist is used to make sure that common guidelines for a pull request are followed.

Related command

General Guidelines

• Have you run azdev style <YOUR_EXT> locally? (pip install azdev required)
• Have you run python scripts/ci/test_index.py -q locally? (pip install wheel==0.30.0 required)
• My extension version conforms to the Extension version schema

For new extensions:

• My extension description/summary conforms to the Extension Summary Guidelines.

About Extension Publish

There is a pipeline to automatically build, upload and publish extension wheels.
Once your pull request is merged into main branch, a new pull request will be created to update src/index.json automatically.
You only need to update the version information in file setup.py and historical information in file HISTORY.rst in your PR but do not modify src/index.json.

[azure-client-tools-bot-prd]

Hi @Tejaswikandula,
Please write the description of changes which can be perceived by customers into HISTORY.rst.
If you want to release a new extension version, please update the version in setup.py as well.

[azure-client-tools-bot-prd]

️✔️Azure CLI Extensions Breaking Change Test

️✔️Non Breaking Changes

[yonzhan]

Thank you for your contribution! We will review the pull request and get back to you soon.

[github-actions]

CodeGen Tools Feedback Collection

Thank you for using our CodeGen tool. We value your feedback, and we would like to know how we can improve our product. Please take a few minutes to fill our codegen survey

[github-actions]

For more info about extension versioning, please refer to Extension version schema

[yonzhan]

Please fix CI issues

[kairu-ms]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 2 pipeline(s).

[azclibot]

[Release] Update index.json for extension [ bastion ] : https://dev.azure.com/azclitools/release/_build/results?buildId=173183&view=results