Bump grafana to 7.5.17

What does this MR do?

Bump grafana to 7.5.17

- Updates grafana from version 7.5.16 to 7.5.17
- Removes patches that are now included with the updated source tree
  from upstream

Changelog: changed

Signed-off-by: Robert Marshall <rmarshall@gitlab.com>

Related issues

Opened because I am done dealing with deps bot breaking Update grafana/grafana from v7.5.16 to 7.5.17 (!6397 - closed) by adding the wrong reference patch.

Deps bot issue to be handled by Dependency Bot Behavior Update (gitlab-org/distribution/team-tasks#1314 - closed)

Checklist

See Definition of done.

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Required

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