[rubygems/rubygems] Remove leftover debugging puts

ruby/rubygems@7c6f15040d

Author: deivid-rodriguez

spec/bundler/install/gems/flex_spec.rb

@@ -230,7 +230,6 @@
         gem "jekyll-feed", "~> 0.12"
       G
 
-      puts lockfile
       lockfile <<-L
         GEM
           remote: #{file_uri_for(gem_repo4)}/