[ruby/irb] Drop hard dependency on RDoc.
This has been introduced in https://github.com/ruby/irb/commit/026700499dfd, but it seems that this is just be mistake, otherwise the later handling of LoadError would not be needed.
LoadError
https://github.com/ruby/irb/commit/54c8df06ff
[ruby/irb] Drop hard dependency on RDoc.
This has been introduced in https://github.com/ruby/irb/commit/026700499dfd,
but it seems that this is just be mistake, otherwise the later handling
of
LoadErrorwould not be needed.https://github.com/ruby/irb/commit/54c8df06ff