[rubygems/rubygems] Remove another unnecessary require
https://github.com/rubygems/rubygems/commit/04e6a5ae31
[rubygems/rubygems] Remove another unnecessary require
https://github.com/rubygems/rubygems/commit/04e6a5ae31