Removal of tests with different result depending on testing env

Remove gabbi tests which are reporting success or failure depending
on the environment they are ran in as this was misleading.

Change-Id: Ifb06b353e4264f4276ebb294a089c4fede74067f

nova/tests/functional/api/openstack/placement/gabbits/unicode.yaml

@@ -43,30 +43,3 @@ tests:
 - name: delete that one
   DELETE: /resource_providers/$ENVIRON['RP_UUID']
   status: 204
-
-# These next three are expected to fail on many mysql
-# installations. It works with the local in-RAM sqlite
-# test database.
-- name: four byte utf8 smiley
-  xfail: true
-  POST: /resource_providers
-  request_headers:
-    content-type: application/json
-  data:
-      name: "\U0001F601"
-      uuid: $ENVIRON['RP_UUID']
-  status: 201
-  response_headers:
-      location: //resource_providers/[a-f0-9-]+/
-
-- name: get that wide resource provider
-  xfail: true
-  GET: $LOCATION
-  response_json_paths:
-      $.name: "\U0001F601"
-
-- name: query by wide name
-  xfail: true
-  GET: /resource_providers?name=%F0%9F%98%81
-  response_json_paths:
-      $.resource_providers[0].name: "\U0001F601"