Removing FieldSet.from_parcels() method #743

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Job	Run time
mypy	3m 30s
py3.13 \| macos \| integration tests	37m 50s
py3.13 \| macos \| unit tests	7m 34s
py3.13 \| ubuntu \| integration tests	15m 17s
py3.13 \| ubuntu \| unit tests	9m 27s
py3.13 \| windows \| integration tests	39m 45s
py3.13 \| windows \| unit tests	22m 10s
py3.10 \| ubuntu \| integration tests	15m 26s
py3.10 \| ubuntu \| unit tests	10m 18s
py3.11 \| ubuntu \| unit tests	10m 11s
py3.12 \| ubuntu \| unit tests	10m 11s
merge-test-artifacts	4s
	3h 1m 43s

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