Remove Moderator Sample because there is no Moderator API.
Reviewed in https://codereview.appspot.com/6776055/.
diff --git a/docs/dyn/compute_v1beta12.operations.html b/docs/dyn/compute_v1beta12.operations.html
index f7a27d9..d1e03c2 100644
--- a/docs/dyn/compute_v1beta12.operations.html
+++ b/docs/dyn/compute_v1beta12.operations.html
@@ -153,7 +153,7 @@
   An object of the form:
 
     {
-    "nextPageToken": "A String", # A token used to continue a truncated list request.
+    "nextPageToken": "A String", # A token used to continue a truncated list request (output only).
     "items": [ # The operation resources.
       {
         "status": "A String", # Status of the operation. Can be one of the following: "PENDING", "RUNNING", or "DONE" (output only).