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: Idc5de89c7b7504d067a19c35e41d0c3a0fee24c8
diff --git a/.zuul.yaml b/.zuul.yaml
index 3fece42..32c02f4 100644
--- a/.zuul.yaml
+++ b/.zuul.yaml
@@ -1,5 +1,4 @@
 - project:
-    name: openstack/barbican-tempest-plugin
     check:
       jobs:
         - barbican-simple-crypto-devstack-tempest