Simplify removal process of internal analytics metrics
What does this MR do and why?
Based on the discussion in #430944 (comment 1761531987) we'd like to simplify the removal process for metrics, but still be reasonably protected from important metrics being removed unknowingly.
The current process highly discourages metric removal due to its complexity which leads to the problem of having unmaintained and no longer up to date metrics.
MR acceptance checklist
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Related to #430944 (closed)