ci: remove pypy2

Author: sbinet

.travis.yml

@@ -33,12 +33,12 @@ before_install:
    - sudo ln -s $TEMPDIR/pypy3-$PYPYVERSION-linux64/bin/pypy3 /usr/local/bin/pypy3
    # install pip (for pypy)
    - curl -L https://bootstrap.pypa.io/get-pip.py --output ${TEMPDIR}/get-pip.py
-   - pypy ${TEMPDIR}/get-pip.py
+   #- pypy ${TEMPDIR}/get-pip.py
    - pypy3 ${TEMPDIR}/get-pip.py
    # install pybindgen
    - python2 -m pip install pybindgen
    - python3 -m pip install pybindgen
-   - pypy  -m pip install pybindgen
+   #- pypy  -m pip install pybindgen
    - pypy3 -m pip install pybindgen
    # install goimports
    - go get golang.org/x/tools/cmd/goimports