fixup! Add Python 2 and 3 build targets to Travis CI

.travis.yml

@@ -93,6 +93,7 @@ before_install:
     fi
   - curl -o- -L https://yarnpkg.com/install.sh | bash -s -- --version 1.13.0
   - export PATH=$HOME/.yarn/bin:$PATH
+  - python --version
 install:
   - THEIA_SKIP_NPM_PREPARE=1 yarn install --skip-integrity-check
   - npx electron-replace-ffmpeg # re-download library (in case it was cached)
@@ -138,9 +139,6 @@ jobs:
       osx_image: xcode11.4
       node_js: 12
       env: CXX=c++
-      before_script:
-        - node --version
-        - python --version
       script:
         - travis_retry yarn test:theia
     - name: macOS 10.15.4 / NodeJS 12 / Python 3
@@ -151,7 +149,6 @@ jobs:
         - CXX=c++
         - PYTHON=/usr/bin/python3
       before_script:
-        - node --version
         - $PYTHON --version
       script:
         - travis_retry yarn test:theia
@@ -161,8 +158,6 @@ jobs:
       env:
         - CXX=c++
         - YARN_GPG=no
-      before_script:
-        - python --version
       script:
         - travis_retry yarn test:theia
     - stage: deploy