[ruby/rubygems] Remove "##" from a comment to require

In RDoc, comment that starts with "##" is a metaprogramming method definition.
If it's not a metaprogramming method definition, "##" shouldn't be used.

ruby/rubygems@b1953a3a09

Author: tompng

lib/rubygems.rb

@@ -1410,9 +1410,7 @@ def default_gem_load_paths
 
 # REFACTOR: This should be pulled out into some kind of hacks file.
 begin
-  ##
   # Defaults the operating system (or packager) wants to provide for RubyGems.
-
   require "rubygems/defaults/operating_system"
 rescue LoadError
   # Ignored
@@ -1427,9 +1425,7 @@ def default_gem_load_paths
 end
 
 begin
-  ##
   # Defaults the Ruby implementation wants to provide for RubyGems
-
   require "rubygems/defaults/#{RUBY_ENGINE}"
 rescue LoadError
 end