prompt: You will be provided with a partial code base and an issue statement explaining a problem to resolve.
  <issue>
  Remove chainer.functions.caffe.CaffeFunction
  This is left for backward compatibility.
  
  </issue>
  <code>
  [start of chainer/functions/caffe/__init__.py]
  1 from chainer.links.caffe import caffe_function
  2 
  3 
  4 # for backward compatibility
  5 CaffeFunction = caffe_function.CaffeFunction
  6
  [end of chainer/functions/caffe/__init__.py]
  [start of setup.py]
  1 #!/usr/bin/env python
  2 
  3 from setuptools import setup
  4 
  5 
  6 setup_requires = []
  7 install_requires = [
  8     'filelock',
  9     'nose',
  10     'numpy>=1.9.0',
  11     'protobuf',
  12     'six>=1.9.0',
  13 ]
  14 
  15 setup(
  16     name='chainer',
  17     version='2.0.0a1',
  18     description='A flexible framework of neural networks',
  19     author='Seiya Tokui',
  20     author_email='tokui@preferred.jp',
  21     url='http://chainer.org/',
  22     license='MIT License',
  23     packages=['chainer',
  24               'chainer.dataset',
  25               'chainer.datasets',
  26               'chainer.functions',
  27               'chainer.functions.activation',
  28               'chainer.functions.array',
  29               'chainer.functions.caffe',
  30               'chainer.functions.connection',
  31               'chainer.functions.evaluation',
  32               'chainer.functions.loss',
  33               'chainer.functions.math',
  34               'chainer.functions.noise',
  35               'chainer.functions.normalization',
  36               'chainer.functions.pooling',
  37               'chainer.functions.theano',
  38               'chainer.functions.util',
  39               'chainer.function_hooks',
  40               'chainer.iterators',
  41               'chainer.initializers',
  42               'chainer.links',
  43               'chainer.links.activation',
  44               'chainer.links.caffe',
  45               'chainer.links.caffe.protobuf2',
  46               'chainer.links.caffe.protobuf3',
  47               'chainer.links.connection',
  48               'chainer.links.loss',
  49               'chainer.links.model',
  50               'chainer.links.model.vision',
  51               'chainer.links.normalization',
  52               'chainer.links.theano',
  53               'chainer.optimizers',
  54               'chainer.serializers',
  55               'chainer.testing',
  56               'chainer.training',
  57               'chainer.training.extensions',
  58               'chainer.training.triggers',
  59               'chainer.utils'],
  60     zip_safe=False,
  61     setup_requires=setup_requires,
  62     install_requires=install_requires,
  63     tests_require=['mock',
  64                    'nose'],
  65 )
  66
  [end of setup.py]
  </code>
  
  I need you to solve this issue by generating a single patch file that I can apply directly to this repository using git apply. Please respond with a single patch file in the following format.
  <patch>
  diff --git a/file.py b/file.py
  --- a/file.py
  +++ b/file.py
  @@ -1,27 +1,35 @@
   def euclidean(a, b):
  -    while b:
  -        a, b = b, a % b
  -    return a
  +    if b == 0:
  +        return a
  +    return euclidean(b, a % b)
   
   
   def bresenham(x0, y0, x1, y1):
       points = []
       dx = abs(x1 - x0)
       dy = abs(y1 - y0)
  -    sx = 1 if x0 < x1 else -1
  -    sy = 1 if y0 < y1 else -1
  -    err = dx - dy
  +    x, y = x0, y0
  +    sx = -1 if x0 > x1 else 1
  +    sy = -1 if y0 > y1 else 1
   
  -    while True:
  -        points.append((x0, y0))
  -        if x0 == x1 and y0 == y1:
  -            break
  -        e2 = 2 * err
  -        if e2 > -dy:
  -            err -= dy
  -            x0 += sx
  -        if e2 < dx:
  -            err += dx
  -            y0 += sy
  +    if dx > dy:
  +        err = dx / 2.0
  +        while x != x1:
  +            points.append((x, y))
  +            err -= dy
  +            if err < 0:
  +                y += sy
  +                err += dx
  +            x += sx
  +    else:
  +        err = dy / 2.0
  +        while y != y1:
  +            points.append((x, y))
  +            err -= dx
  +            if err < 0:
  +                x += sx
  +                err += dy
  +            y += sy
  +
  +    points.append((x, y))
       return points
  
  </patch>
golden_diff: diff --git a/chainer/functions/caffe/__init__.py b/chainer/functions/caffe/__init__.py
  deleted file mode 100644
  --- a/chainer/functions/caffe/__init__.py
  +++ /dev/null
  @@ -1,5 +0,0 @@
  -from chainer.links.caffe import caffe_function
  -
  -
  -# for backward compatibility
  -CaffeFunction = caffe_function.CaffeFunction
  diff --git a/setup.py b/setup.py
  --- a/setup.py
  +++ b/setup.py
  @@ -26,7 +26,6 @@
                 'chainer.functions',
                 'chainer.functions.activation',
                 'chainer.functions.array',
  -              'chainer.functions.caffe',
                 'chainer.functions.connection',
                 'chainer.functions.evaluation',
                 'chainer.functions.loss',
  
verification_info: {"golden_diff": "diff --git a/chainer/functions/caffe/__init__.py b/chainer/functions/caffe/__init__.py\ndeleted file mode 100644\n--- a/chainer/functions/caffe/__init__.py\n+++ /dev/null\n@@ -1,5 +0,0 @@\n-from chainer.links.caffe import caffe_function\n-\n-\n-# for backward compatibility\n-CaffeFunction = caffe_function.CaffeFunction\ndiff --git a/setup.py b/setup.py\n--- a/setup.py\n+++ b/setup.py\n@@ -26,7 +26,6 @@\n               'chainer.functions',\n               'chainer.functions.activation',\n               'chainer.functions.array',\n-              'chainer.functions.caffe',\n               'chainer.functions.connection',\n               'chainer.functions.evaluation',\n               'chainer.functions.loss',\n", "issue": "Remove chainer.functions.caffe.CaffeFunction\nThis is left for backward compatibility.\n", "before_files": [{"content": "from chainer.links.caffe import caffe_function\n\n\n# for backward compatibility\nCaffeFunction = caffe_function.CaffeFunction\n", "path": "chainer/functions/caffe/__init__.py"}, {"content": "#!/usr/bin/env python\n\nfrom setuptools import setup\n\n\nsetup_requires = []\ninstall_requires = [\n    'filelock',\n    'nose',\n    'numpy>=1.9.0',\n    'protobuf',\n    'six>=1.9.0',\n]\n\nsetup(\n    name='chainer',\n    version='2.0.0a1',\n    description='A flexible framework of neural networks',\n    author='Seiya Tokui',\n    author_email='tokui@preferred.jp',\n    url='http://chainer.org/',\n    license='MIT License',\n    packages=['chainer',\n              'chainer.dataset',\n              'chainer.datasets',\n              'chainer.functions',\n              'chainer.functions.activation',\n              'chainer.functions.array',\n              'chainer.functions.caffe',\n              'chainer.functions.connection',\n              'chainer.functions.evaluation',\n              'chainer.functions.loss',\n              'chainer.functions.math',\n              'chainer.functions.noise',\n              'chainer.functions.normalization',\n              'chainer.functions.pooling',\n              'chainer.functions.theano',\n              'chainer.functions.util',\n              'chainer.function_hooks',\n              'chainer.iterators',\n              'chainer.initializers',\n              'chainer.links',\n              'chainer.links.activation',\n              'chainer.links.caffe',\n              'chainer.links.caffe.protobuf2',\n              'chainer.links.caffe.protobuf3',\n              'chainer.links.connection',\n              'chainer.links.loss',\n              'chainer.links.model',\n              'chainer.links.model.vision',\n              'chainer.links.normalization',\n              'chainer.links.theano',\n              'chainer.optimizers',\n              'chainer.serializers',\n              'chainer.testing',\n              'chainer.training',\n              'chainer.training.extensions',\n              'chainer.training.triggers',\n              'chainer.utils'],\n    zip_safe=False,\n    setup_requires=setup_requires,\n    install_requires=install_requires,\n    tests_require=['mock',\n                   'nose'],\n)\n", "path": "setup.py"}]}