Remove data_full_zdim from fieldfilebuffer #745

Job	Run time
mypy	52s
py3.13 \| macos \| unit tests	53s
py3.13 \| macos \| integration tests	52s
py3.13 \| ubuntu \| unit tests	52s
py3.13 \| ubuntu \| integration tests	51s
py3.13 \| windows \| unit tests	43s
py3.13 \| windows \| integration tests	49s
py3.10 \| ubuntu \| integration tests	50s
py3.10 \| ubuntu \| unit tests	51s
py3.11 \| ubuntu \| unit tests	50s
py3.12 \| ubuntu \| unit tests	50s
merge-test-artifacts	1s
	9m 14s

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