Removing a dead bench notebook

[psfinaki]

This was added here but got broken during the refactoring here.

Now, this could be resurrected but I propose to just remove it, because:

• it's not trivial to fix (code needs to be rewritten via the benchmark helpers to avoid duplication
• it's not trivial to maintain (notebooks don't compile like other benchmarks we have)
• it's not trivial to execute in CI
• it's not very futureproof (as of now, the artifact paths and the code itself is broken)
• it's not very useful (just a graph representation of the BDN table - we can those in all the FCS benchmarks)
• it's not very original (as opposed to the historical benchmark for example)
• it's not the right place (such things are likely better suited for dontet/perf repo)

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