Disable Mash warnings

The test logs are very polluted by the warning messages and while we
use this implementation we have Mash's monkeypatches so there is no
reason to see it in the logs all the time.

Author: mauromorales

lib/bitbucket_rest_api/response/mashify.rb

@@ -3,11 +3,14 @@
 require 'faraday'
 
 module BitBucket
-  class Response::Mashify < Response
-    dependency 'hashie/mash'
+  require 'hashie/mash'
+  class Mash < ::Hashie::Mash
+    disable_warnings
+  end
 
+  class Response::Mashify < Response
     define_parser do |body|
-      ::Hashie::Mash.new body
+      Mash.new body
     end
 
     def parse(body)