The necessity of the Example module

[caicancai]

The current example module is odd; it contains some examples, but they're incomplete. I'm debating whether to add more. I've checked other dialect libraries like datasketches, but none have a corresponding example module. Is the example module for datasketches-rust necessary?

[caicancai]

cc @tisonkun @notfilippo

[PsiACE]

I think we can remove the examples for now. I’d prefer to stick with the basic examples in docs. If we need a specific example, it should reflect a use case in real production.

[notfilippo]

Makes sense, feel free to open a PR to remove the directory.