Remove `_constrain_dt_to_within_time_interval` function #2962

Job	Run time
should run ci	7s
GHA Security Analysis using Zizmor	15s
cache-pixi-lock	6s
Validation tests \| pixi run tests-validation	2m 34s
Flaky unit tests: ubuntu \| pixi run -e test tests-flaky	2m 14s
build-and-upload-nightly-parcels	1m 43s
Unit tests: ubuntu \| pixi run -e test tests	5m 40s
Unit tests: windows \| pixi run -e test tests	12m 22s
Unit tests: ubuntu \| pixi run -e test-py311 tests	5m 47s
TypeChecking: pixi run typing	1m 56s
Unit tests: ubuntu \| pixi run -e test-py313 tests	5m 33s
Unit tests: ubuntu \| pixi run -e test-minimum tests	5m 40s
Integration: ${{ matrix.os }} \| pixi run -e ${{ matrix.pixi-environment }} tests-notebooks	-1s
merge-test-artifacts	0s
	43m 56s

Provide feedback