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: I8c14eed2b463b23e03ff1574b50b4cd1de8f38fd
diff --git a/.zuul.yaml b/.zuul.yaml
index c820c8e..a6b2e56 100644
--- a/.zuul.yaml
+++ b/.zuul.yaml
@@ -29,7 +29,6 @@
       - playbooks/zuul-stream/.*
 
 - project:
-    name: openstack-infra/zuul
     check:
       jobs:
         - build-openstack-sphinx-docs: