Remove binding to singleton as Configuration has already Singleton scope

Change-Id: Ia43162be3ea477e10401c914f424949de4e18d6e
Signed-off-by: Jacek Centkowski <jcentkowski@collab.net>
diff --git a/src/main/java/com/googlesource/gerrit/plugins/webhooks/Module.java b/src/main/java/com/googlesource/gerrit/plugins/webhooks/Module.java
index 71336e9..f59df7c 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/webhooks/Module.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/webhooks/Module.java
@@ -28,7 +28,6 @@
     bind(ScheduledExecutorService.class)
         .annotatedWith(WebHooksExecutor.class)
         .toProvider(ExecutorProvider.class);
-    bind(Configuration.class).in(Scopes.SINGLETON);
     bind(CloseableHttpClient.class).toProvider(HttpClientProvider.class).in(Scopes.SINGLETON);
     factory(PostTask.Factory.class);
     DynamicSet.bind(binder(), EventListener.class).to(EventHandler.class);