[ruby/json] Remove String#-@ check in extconf.rb
Now that older rubies have been droped, we no longer need to check for all that.
https://github.com/ruby/json/commit/35cf2b84e0
Added by
[ruby/json] Remove String#-@ check in extconf.rb
Now that older rubies have been droped, we no longer need to check
for all that.
https://github.com/ruby/json/commit/35cf2b84e0