remove py3.7

Author: rusty1s

.travis.yml

@@ -6,7 +6,6 @@ matrix:
     - python: 2.7
     - python: 3.5
     - python: 3.6
-    - python: 3.7
 addons:
   apt:
     sources:
@@ -21,7 +20,6 @@ install:
   - if [[ $TRAVIS_PYTHON_VERSION == 2.7 ]]; then pip install https://download.pytorch.org/whl/cpu/torch-1.0.0-cp27-cp27m-linux_x86_64.whl
   - if [[ $TRAVIS_PYTHON_VERSION == 3.5 ]]; then pip install https://download.pytorch.org/whl/cpu/torch-1.0.0-cp35-cp35m-linux_x86_64.whl; fi
   - if [[ $TRAVIS_PYTHON_VERSION == 3.6 ]]; then pip install https://download.pytorch.org/whl/cpu/torch-1.0.0-cp36-cp36m-linux_x86_64.whl; fi
-  - if [[ $TRAVIS_PYTHON_VERSION == 3.7 ]]; then pip install https://download.pytorch.org/whl/cpu/torch-1.0.0-cp37-cp37m-linux_x86_64.whl; fi
   - pip install pycodestyle
   - pip install flake8
   - pip install codecov