Remove dep duplicate file

What does this MR do and why?

A small MVC for: !70775 (comment 682815714)

Also, I noticed that there are duplicate .yml files in the /deprecations directory:

* 14-2-deprecation-task-runner.yml
* distribution_deprecations_14-3.yml

This caused the rake task to create a duplicate entry in the markdown file (which I manually removed). I think one of these duplicate .yml files should be removed, but I didn't want to do that in this MR.

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