[rubygems/rubygems] Don't add custom github source to bundle init Gemfile
bundle init
It's provided by bundler.
https://github.com/rubygems/rubygems/commit/25ccaab46b
[rubygems/rubygems] Don't add custom github source to
bundle initGemfileIt's provided by bundler.
https://github.com/rubygems/rubygems/commit/25ccaab46b