message: Fix feature_column unit test
diff: @@ -41,7 +41,6 @@ from tensorflow.python.framework import errors
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import sparse_tensor
  from tensorflow.python.framework import test_util
  -from tensorflow.python.keras.utils import np_utils
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import init_ops
  from tensorflow.python.ops import lookup_ops
  @@ -2102,12 +2101,11 @@ class LinearModelTest(test.TestCase):
  model = fc.LinearModel(columns)
  model.compile(
  optimizer=rmsprop.RMSPropOptimizer(1e-3),
  - loss='categorical_crossentropy',
  + loss='binary_crossentropy',
  metrics=['accuracy'])
  x = {'a': np.random.random((10, 1))}
  - y = np.random.randint(20, size=(10, 1))
  - y = np_utils.to_categorical(y, num_classes=20)
  + y = np.random.randint(0, 2, size=(10, 1))
  model.fit(x, y, epochs=1, batch_size=5)
  model.fit(x, y, epochs=1, batch_size=5)
  model.evaluate(x, y, batch_size=5)
  