Enforce no empty lines around class body in rubygems

To normalize the code style with `bundler`.

lib/rubygems/commands/specification_command.rb

@@ -5,7 +5,6 @@ require 'rubygems/version_option'
 require 'rubygems/package'
 
 class Gem::Commands::SpecificationCommand < Gem::Command
-
   include Gem::LocalRemoteOptions
   include Gem::VersionOption
 
@@ -143,5 +142,4 @@ Specific fields in the specification can be extracted in YAML format:
       say "\n"
     end
   end
-
 end