Remove obsolete manifest entries

Change-Id: Ib5093d8e67cccd5c83c4156f381b6d85bdf44c2f
diff --git a/BUCK b/BUCK
index 6c1c5bd..b80fa41 100644
--- a/BUCK
+++ b/BUCK
@@ -9,8 +9,6 @@
     'Gerrit-PluginName: rabbitmq',
     'Gerrit-Module: com.googlesource.gerrit.plugins.rabbitmq.Module',
     'Implementation-Title: Gerrit rabbitmq plugin',
-    'Implementation-URL: https://github.com/rinrinne/gerrit-rabbitmq-plugin',
-    'Implementation-Vendor: rinrinne',
   ],
   deps = [
     ':amqp-client',