Remove dot utils doc

docs/mkdocs.yml

@@ -36,6 +36,4 @@ pages:
   - Sequence Preprocessing: preprocessing/sequence.md
   - Text Preprocessing: preprocessing/text.md
   - Image Preprocessing: preprocessing/image.md
-- Utils:
-  - Visualization Utilities: utils/visualization.md
 

docs/sources/documentation.md

@@ -36,8 +36,3 @@
 - [Sequence](preprocessing/sequence.md)
 - [Text](preprocessing/text.md)
 - [Image](preprocessing/image.md)
-
----
-
-## Utils
-- [Visualization](utils/visualization.md)

docs/sources/utils/visualization.md

@@ -1,28 +0,0 @@
-## Grapher
-
-Creates a visualization of the model structure using `pydot`.
-
-```python
-grapher = keras.utils.dot_utils.Grapher()
-```
-- __Methods__:
-    - __plot__(model, to_file): creates a graph visualizing the structure of `model` and writes it to `to_file`.
-      - __Arguments__:
-        - __model__: an instance of a Keras model (e.g. `Sequential`)
-        - __to_file__: the filename to save the visualization png to.
-
-__Examples__:
-
-```python
-from keras.models import Sequential
-from keras.layers.core import Dense, Activation
-from keras.utils.dot_utils import Grapher
-
-grapher = Grapher()
-
-model = Sequential()
-model.add(Dense(64, 2, init='uniform'))
-model.add(Activation('softmax'))
-grapher.plot(model, 'model.png')
-```
-