Zuul: Remove project name

Zuul no longer requires the project-name for in-repo configuration.
Omitting it makes forking or renaming projects easier.

Change-Id: I8158b7bf6fe5321ec97f2cffedb47f6500641250

zuul.d/project.yaml

@@ -1,4 +1,3 @@
----
 # Copyright 2017, Rackspace US, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -14,7 +13,6 @@
 # limitations under the License.
 
 - project:
-    name: openstack/openstack-ansible-rabbitmq_server
     check:
       jobs:
         - openstack-ansible-linters