Remove unnecessary require statement #137
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In Ruby 3.2, the Set class is built-in and does not require a require "set" statement. It's automatically loaded when you use the Set constant or call Enumerable#to_set.
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Now that #135 has been merged, it's safe to remove this
requirestatement. In Ruby 3.2, the Set class is built-in and is automatically loaded when you use theSetconstant or callEnumerable#to_set.