tests

Remove calls to TensorFlow related cellfinder functions #310

Job	Run time
Linting	18s
Check manifest	19s
Check benchmarks	2m 4s
ubuntu-latest py3.9	10m 38s
ubuntu-latest py3.10	10m 1s
macos-13 py3.10	17m 39s
macos-latest py3.10	21m 39s
windows-latest py3.10	32m 42s
Build source distribution	0s
Publish build distributions	0s
	1h 35m 20s

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