documentation: remove marimo navigation from notebooks #5634
Description
All notebooks at https://docs.xdsl.dev/marimo/ should use the navigation-free layout as in https://docs.xdsl.dev/marimo/html/mlir_introduction/.
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All notebooks at https://docs.xdsl.dev/marimo/ should use the navigation-free layout as in https://docs.xdsl.dev/marimo/html/mlir_introduction/.