Remove unused nwfilter field from struct remote_error

Change 965466c1 added a new field to struct remote_error, which broke
the RPC protocol. Fortunately the new field is unused, so this change
simply removes it again.

* src/remote/remote_protocol.(c|h|x): Remove remote_nwfilter from struct
  remote_error

src/remote/remote_protocol.c

@@ -227,8 +227,6 @@ xdr_remote_error (XDR *xdrs, remote_error *objp)
                  return FALSE;
          if (!xdr_remote_network (xdrs, &objp->net))
                  return FALSE;
-         if (!xdr_remote_nwfilter (xdrs, &objp->nwfilter))
-                 return FALSE;
         return TRUE;
 }
 

src/remote/remote_protocol.h

@@ -143,7 +143,6 @@ struct remote_error {
         int int1;
         int int2;
         remote_network net;
-        remote_nwfilter nwfilter;
 };
 typedef struct remote_error remote_error;
 

src/remote/remote_protocol.x

@@ -266,7 +266,6 @@ struct remote_error {
     int int1;
     int int2;
     remote_network net;
-    remote_nwfilter nwfilter;
 };
 
 /* Authentication types available thus far.... */