[ruby/set] Remove SortedSet implementations

It required RBTree to perform decently and the external dependency was
not suitable for a standard library.  The pure ruby fallback
implementation was originally meant to be an example of how to write a
subclass of Set, and its poor performance was not suitable for use in
production.

I decided it should be distributed as an external library instead of
bundling it with Set.

https://github.com/ruby/set/commit/dfcc8e568b

0 files changed, 0 insertions, 0 deletions