Remove 1.8 and 1.9 specific monkey patches

This is the easy part of https://github.com/opscode/chef/issues/2497 the rest of them are more involved.

@opscode/client-core @opscode/client-engineers 
The URI monkey patch had a `require 'uri'` in it - we need to add that to the places we're no longer including the monkey patch but that don't already have `require 'uri'` in them.