Update request_access.md

[tgraham-ucsc]

Removed reference to data-services@ucsc.edu - that's primarily for Infoview Support Requests.

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• To see the specific tasks where the Asana app for GitHub is being used, see below:
  • https://app.asana.com/0/0/1204931803733651
  • https://app.asana.com/0/0/1204913477675139