chore: Remove abandoned Sentinel-1 notebook #878

Job	Run time
Test machine readable to human-readable date/time using Nix	37s
Test Sentinel-2 on macos-12, using Poetry with Python 3.9	3m 14s
Lint content	1m 44s
Test Sentinel-2 on macos-12, using Poetry with Python 3.11	8m 18s
Test Sentinel-2 using Nix	1m 9s
Test Sentinel-2 on ubuntu-22.04, using Poetry with Python 3.9	1m 55s
Test Sentinel-2 on ubuntu-22.04, using Poetry with Python 3.11	6m 45s
Test Sentinel-2 on ubuntu-24.04, using Poetry with Python 3.9	1m 39s
Test Sentinel-2 on ubuntu-24.04, using Poetry with Python 3.11	8m 25s
Test Sentinel-2 on windows-2022, using Poetry with Python 3.9	4m 6s
Test Sentinel-2 on windows-2022, using Poetry with Python 3.11	7m 46s
finalise	1s
	45m 39s

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