fix: remove unused OTel tracing setup (#2874)

* fix: remove unused OTel tracing setup

This is actually configured elsewhere, in the underlying Lambda

* Update src/run/handlers/tracer.cts

Co-authored-by: Michal Piechowiak <misiek.piechowiak@gmail.com>

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Co-authored-by: Michal Piechowiak <misiek.piechowiak@gmail.com>

Author: serhalp