E2E test: remove suggested reviewers E2E test

Jay McCurerequested to merge
jmc-remove-sug-reviewers-e2e into master

What does this MR do and why?

Removes suggested reviewer E2E test, as the feature is being removed https://gitlab.com/groups/gitlab-org/-/epics/14867

The test has not been run in over a year and currently isn't configured to run https://gitlab.com/gitlab-org/gitlab/-/quality/test_cases/377613

Resolves gitlab-org/quality/quality-engineering/team-tasks#3594 (closed)

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Edited by Jay McCure

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