Remove grace period for Gitlab/ServiceResponse
In https://gitlab.com/gitlab-org/gitlab/-/merge_requests/97557+ we deprecated the use of `ServiceResponse#http_status` and added a Rubocop :cop: to detect usages.
The :cop: was added with a grace period `Details: grace period`. We should remove the grace period after 1-2 weeks from merging https://gitlab.com/gitlab-org/gitlab/-/merge_requests/97557+
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By design, `#f_rubocop` should be notified if we see silenced offenses during a grace period. Once we no longer see these notifications we can safely remove the grace period.
I don't have numbers yet but I think having the grace period turned on for a week or two should be sufficient.
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