Remove duplicate binding of AllUsersName to AllUsersNameProvider

Change [1] already binds the `AllUsersName` to `AllUsersNameProvider`
and therefore the additional binding in the plugin prevents the plugin
from starting up.

[1] https://gerrit-review.googlesource.com/c/gerrit/+/389162

Change-Id: I95097aef1a1742ea07f0522c8e01ba845a07d48c

src/main/java/com/googlesource/gerrit/plugins/validation/dfsrefdb/zookeeper/ZkInit.java

diff --git a/src/main/java/com/googlesource/gerrit/plugins/validation/dfsrefdb/zookeeper/ZkInit.java b/src/main/java/com/googlesource/gerrit/plugins/validation/dfsrefdb/zookeeper/ZkInit.java
index 893698e..fdd04a6 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/validation/dfsrefdb/zookeeper/ZkInit.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/validation/dfsrefdb/zookeeper/ZkInit.java
@@ -20,8 +20,6 @@
 import com.google.gerrit.pgm.init.api.InitStep;
 import com.google.gerrit.server.config.AllProjectsName;
 import com.google.gerrit.server.config.AllProjectsNameProvider;
-import com.google.gerrit.server.config.AllUsersName;
-import com.google.gerrit.server.config.AllUsersNameProvider;
 import com.google.gerrit.server.config.SitePaths;
 import com.google.gerrit.server.schema.NoteDbSchemaVersionManager;
 import com.google.inject.AbstractModule;
@@ -87,7 +85,6 @@
           @Override
           protected void configure() {
             bind(AllProjectsName.class).toProvider(AllProjectsNameProvider.class);
-            bind(AllUsersName.class).toProvider(AllUsersNameProvider.class);
           }
         });
   }