remove useless code in AttentionCluster

fluid/PaddleCV/video/configs/attention_cluster.txt

 [MODEL]
 name = "AttentionCluster"
 dataset = "YouTube-8M"
-bone_nework = None
+bone_network = None
 drop_rate = 0.5
 feature_num = 2
 feature_names = ['rgb', 'audio']

fluid/PaddleCV/video/models/attention_cluster/logistic_model.py

@@ -3,12 +3,10 @@ import paddle.fluid as fluid
 
 
 class LogisticModel(object):
-    """Logistic model with L2 regularization."""
-
+    """Logistic model."""
     def build_model(self,
                     model_input,
                     vocab_size,
-                    l2_penalty=None,
                     **unused_params):
         """Creates a logistic model.
 

fluid/PaddleCV/video/models/attention_cluster/shifting_attention.py

@@ -18,7 +18,6 @@ class ShiftingAttentionModel(object):
         x_shape.stop_gradient = True
         flat_x = fluid.layers.reshape(x, shape=(-1, self.seg_num))
         flat_softmax = fluid.layers.softmax(flat_x)
-        # return fluid.layers.reshape(flat_softmax, shape=(x.shape[0], self.n_att, -1), actual_shape=x_shape)
         return fluid.layers.reshape(
             flat_softmax, shape=x.shape, actual_shape=x_shape)