Remove timestamps keyword from Field and FieldSet #687

Job	Run time
mypy	3m 29s
py3.13 \| macos \| integration tests	11m 20s
py3.13 \| macos \| unit tests	9m 21s
py3.13 \| ubuntu \| integration tests	13m 37s
py3.13 \| ubuntu \| unit tests	10m 8s
py3.13 \| windows \| integration tests	27m 29s
py3.13 \| windows \| unit tests	14m 14s
py3.10 \| ubuntu \| integration tests	13m 47s
py3.10 \| ubuntu \| unit tests	10m 51s
py3.11 \| ubuntu \| unit tests	10m 16s
py3.12 \| ubuntu \| unit tests	10m 24s
merge-test-artifacts	0s
	2h 14m 56s

Provide feedback