[rackspace|identity] Remove unused get_credentials request.

lib/fog/rackspace/identity.rb

@@ -31,7 +31,6 @@ module Fog
       request :create_user
       request :update_user
       request :delete_user
-      request :get_credentials
 
       class Mock
         def request

lib/fog/rackspace/requests/identity/get_credentials.rb

@@ -1,15 +0,0 @@
-module Fog
-  module Rackspace
-    class Identity
-      class Real
-        def get_credentials(user_id)
-          request(
-            :expects => [200, 203],
-            :method => 'GET',
-            :path => "users/#{user_id}/OS-KSADM/credentials/RAX-KSKEY:apiKeyCredentials"
-          )
-        end
-      end
-    end
-  end
-end

tests/rackspace/requests/identity/user_tests.rb

@@ -99,9 +99,5 @@ Shindo.tests('Fog::Rackspace::Identity | users', ['rackspace']) do
     tests('#list_credentials').formats(CREDENTIALS_FORMAT) do
       service.list_credentials(credential_id).body
     end
-
-    tests('#get_credentials').formats(CREDENTIAL_FORMAT) do
-      service.get_credentials(credential_id).body
-    end
   end
 end