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That would cause strange result. For example, run "konsole --workdir .",
then bash or zsh would report its current dir as "."

This is a follow up of commit 790e835c

I am not sure they all are already fixed, but taking their age into
consideration, leaving them there would be more confusing than helpful.

The old way has one problem: HistoryFileNone::isUnlimited() returned
true because HistoryFileNone::maximumLineCount() returned 0. Although
that did not cause problem for practical usage, it was still quite odd.

The code of class HistoryScrollBuffer and HistoryScrollBlockArray are
quite old and not in use for quite some time. The current implementation
for history of fixed size is class CompactHistoryType.

Maybe those deprecated classes should be totally removed , but at the
moment just leave theme there as reference.