Bug fix : squeeze (#3433)

keras/backend/theano_backend.py

@@ -504,11 +504,9 @@ def expand_dims(x, dim=-1):
 def squeeze(x, axis):
     '''Remove a 1-dimension from the tensor at index "axis".
     '''
-    broadcastable = x.broadcastable[:axis] + x.broadcastable[axis+1:]
-    x = T.patternbroadcast(x, [i == axis for i in range(x.type.ndim)])
-    x = T.squeeze(x)
-    x = T.patternbroadcast(x, broadcastable)
-    return x
+    shape = list(x.shape)
+    shape.pop(axis)
+    return T.reshape(x, tuple(shape))
 
 
 def temporal_padding(x, padding=1):