remove {simulist} given that requires tutorials-late concepts

[avallecam]

from https://epiverse-trace.github.io/tutorials-early/describe-cases.html#synthetic-outbreak-data

given that simulist needs middle-task concepts (accessing to delays using {epiparameter}) and late-task concepts (key delay distributions from the SIR epidemics), better to relate it with late-task than to early-task epiverse-trace/tutorials-late#45

[avallecam]

Hi @Degoot-AM I think that in the aggregate and visualization episode, we can work directly from the last linelist output from the previous validation episode. I'm interested to know your thoughts on this before moving forward.

[avallecam]

alternative issue #123 rationale: keep task related to data preparation within tutorials-early