Remove API and git panels from Certify stage dash

John Hoperequested to merge
jh-certify-remove-api-git-panels into master
Related to https://gitlab.com/gitlab-com/gl-infra/scalability/-/issues/897#note_538254794 Confines the Certify group dashboard to Web and Sidekiq panels only, since we don't currently have features using git or the Rest API. https://dashboards.gitlab.net/dashboard/snapshot/ZzjprdBSltZwFxfTBE0SnJ09YHSrHHXz
Edited by John Hope

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