Remove negz from maintainers

### What problem are you facing?

I'm listed as a maintainer of this function but in practice I've never worked on it and don't use it.

### How could this Function help solve your problem?

I think we could find another maintainer with more context. Perhaps @ezgidemirel @phisco or @stevendborrelli (top 3 contributors).

Locate the repository's maintainer listing and inspect how maintainers are recorded for this Function. Remove negz from the relevant listing and identify an appropriate replacement from the issue's suggested contributors; confirm the repository's maintainer metadata remains valid.

Written by the indexing model from the issue text.