Enforce no empty lines around class body in rubygems

To normalize the code style with `bundler`.

lib/rubygems/commands/stale_command.rb

@@ -2,7 +2,6 @@
 require 'rubygems/command'
 
 class Gem::Commands::StaleCommand < Gem::Command
-
   def initialize
     super('stale', 'List gems along with access times')
   end
@@ -37,5 +36,4 @@ longer using.
       say "#{name} at #{atime.strftime '%c'}"
     end
   end
-
 end