Fix unittests

paddle/gserver/tests/sequence_layer_group.conf

@@ -48,8 +48,7 @@ lstm = lstmemory_group(
     size=hidden_dim,
     act=TanhActivation(),
     gate_act=SigmoidActivation(),
-    state_act=TanhActivation(),
-    lstm_layer_attr=ExtraLayerAttribute(error_clipping_threshold=50))
+    state_act=TanhActivation())
 
 lstm_last = last_seq(input=lstm)
 

python/paddle/trainer_config_helpers/tests/configs/protostr/projections.protostr

@@ -320,6 +320,7 @@ layers {
     }
   }
   drop_rate: 0.5
+  error_clipping_threshold: 40.0
 }
 parameters {
   name: "___embedding_0__.w0"