Remove dead logic from endpoint

[yngve-sk]

Callback does not currently return anything, don't think we plan to let the callback interrupt the websocket from running anyway?

[codspeed-hq]

CodSpeed Performance Report

Merging #10165 will improve performances by 10.73%

_{Comparing yngve-sk:25.02.27.remove-dead-logic-from-endpoint (307e070) with main (27a0895)}

Summary

⚡ 1 improvements
✅ 24 untouched benchmarks

Benchmarks breakdown

	Benchmark	BASE	HEAD	Change
⚡	test_direct_dark_performance_with_storage[gen_x: 20, sum_x: 20 reals: 10-summary-get_record_observations]	1.5 ms	1.3 ms	+10.73%