Closes MicrosoftDocs/mixed-reality#663

[annebelleo]

Removes private video and text about the video.

[prmerger-automator[bot]]

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[opbld31]

Learn Build status updates of commit 079c88f:

:white_check_mark: Validation status: passed

File	Status	Preview URL	Details
mixed-reality-docs/mr-dev-docs/develop/advanced-concepts/how-it-works-mixed-reality-capture-studios.md	:white_check_mark:Succeeded

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[prmerger-automator[bot]]

PRMerger Results

Issue	Description
File Change Percent	This PR contains file(s) with more than 20% file change.

[opbld32]

Learn Build status updates of commit 6c00b50:

:x: Validation status: errors

Please follow instructions here which may help to resolve issue.

File	Status	Preview URL	Details
[]()	:x:Error		Details

• [Error: GitBranchDeletedOrForcePushed]

  Cannot sync git repo to specified commit because ref +refs/pull/667/merge has been deleted or has been force pushed.
  If this is pull request, please ensure it is mergeable (no merge conflict) and open (not closed).

For more details, please refer to the build report.

If you see build warnings/errors with permission issues, it might be due to single sign-on (SSO) enabled on Microsoft's GitHub organizations. Please follow instructions here to re-authorize your GitHub account to Learn Build.

Note: Broken links written as relative paths are included in the above build report. For broken links written as absolute paths or external URLs, see the broken link report.

Note: Your PR may contain errors or warnings or suggestions unrelated to the files you changed. This happens when external dependencies like GitHub alias, Microsoft alias, cross repo links are updated. Please use these instructions to resolve them.

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