change travis setting

.travis.yml

@@ -1,18 +1,12 @@
 language: python
 python:
   - 3.6
-before_install:
-  - sudo apt-get -qq update
-  - sudo apt-get install libboost-dev
-  - sudo apt-get install libc++-dev
 
 install:
   - "pip install scipy"
   - "pip install numpy"
   - "pip install matplotlib"
   - "pip install pandas"
-  - "pip install Cython"
-  - "pip install git+https://github.com/ghliu/pyReedsShepp"
 
 script:
   - python --version