Don't manipulate bin scripts for jruby/ruby

[headius]

In jruby/jruby#8875 we modified JRuby's distribution to always ship scripts for bin/jruby and bin/ruby:

• bin/jruby and bin/ruby are versioned shell scripts that launch /bin/sh bin/jruby.sh.
• bin/ruby.bat contains batch code to launch bin/ruby.exe.
• No copying of scripts is done during the build and no tweaks are needed by installers to copy, link, or create additional bin/ commands.

These changes now conflict with jruby-dev-builder's symlinking of bin/jruby to bin/ruby and its creation of bin/ruby.bat, so we remove the relevant steps.

[headius]

The relevant changes were released in JRuby 10.0.1.0, so all dev/head builds should have picked up the bin changes long ago. This job has been failing for some time.

[eregon]

Looks good, but have you seen ruby/setup-ruby#781 (comment) ?
It seems jruby.exe is missing or something like that.

EDIT: so I think it might fail the same way here too on Windows

[eregon]

FYI I just pushed 7c7bcb3 since windows-2019 is gone (same as ruby/ruby-builder@228ee88 but on this repo)

[eregon]

I'll merge this as it's definitely a good change, and dev builds here are broken currently anyway.
I think it will make it easier to experiment with a fix for ruby/setup-ruby#781 (comment) too (I guess that needs a fix in JRuby).

[eregon]

Interesting, dev builds are fine on Windows and there is jruby.exe there:
https://github.com/ruby/jruby-dev-builder/actions/runs/16426443478/job/46417804334#step:8:286

I suspect the problem is then that the default tar in PATH on Windows in GitHub Actions is broken in https://github.com/ruby/ruby-builder/actions/runs/16365805938/job/46242634106#step:10:3 and omits jruby.exe when there is jruby.bat or something like that (I recall seeing this once in the past)
and OTOH C:\windows\system32\tar.exe is fine and behaves correctly (that's the reason we use it in this repo).
I'll try that in ruby-builder then.

Yep, that's MSP-Greg/setup-ruby#1 (comment)