Update build-data-pipeline.md to remove unavailable extension

[akoppanur]

DevOps for Azure Databricks extension is no longer available. Here is the pipeline yml file that refers to the unavailable extension: https://github.com/MicrosoftDocs/azure-devops-docs-samples/blob/main/azure-data-pipeline/data_pipeline_ci_cd.yml

Customers have reported this issue and requested alternate methods. See here: https://github.com/microsoft/azdo-databricks/pull/43 This documentation needs to be updated to provide our own custom script for deployment to Azure Databricks and ADF or documentation to be removed.

There is an alternate third-party extension: https://marketplace.visualstudio.com/items?itemName=DataThirstLtd.databricksDeployScriptsTasks

[prmerger-automator[bot]]

@akoppanur : Thanks for your contribution! The author(s) have been notified to review your proposed change.

[ttorble]

@juliakm

Can you review the proposed changes?

IMPORTANT: When the changes are ready for publication, adding a #sign-off comment is the best way to signal that the PR is ready for the review team to merge.

#label:"aq-pr-triaged" @MicrosoftDocs/public-repo-pr-review-team

[ktoliver]

@juliakm - Could you review this proposed update to your article and enter #sign-off in a comment if it's ready to merge?

Thanks!