Removes tests with broken infra

.circleci/config.yml

@@ -168,21 +168,6 @@ jobs:
       - *attach_workspace
       - *test_build
       - *test_run
-  test-macos-node6:
-    <<: *macos_defaults
-    macos:
-      xcode: "9.0"
-    steps:
-      - run:
-          name: Install Node 6
-          command: |
-            brew uninstall --ignore-dependencies node
-            HOMEBREW_NO_AUTO_UPDATE=1 brew install node@6
-            brew link --overwrite --force node@6
-            [[ $(node --version) =~ ^v6\. ]]
-      - *attach_workspace
-      - *test_build
-      - *test_run
   test-e2e-ubuntu1604:
     <<: *docker_defaults
     docker:

__tests__/integration.js

@@ -70,7 +70,7 @@ addTest('https://github.com/bestander/chrome-app-livereload.git'); // no package
 addTest('bestander/chrome-app-livereload'); // no package.json, github, tarball
 
 if (process.platform !== 'win32') {
-  addTest('https://github.com/yarnpkg/yarn/releases/download/v0.18.1/yarn-v0.18.1.tar.gz'); // tarball
+  addTest('https://github.com/yarnpkg/yarn/releases/download/v1.22.10/yarn-v1.22.10.tar.gz'); // tarball
   addTest('[email protected]', {strictPeers: true}, ['--no-node-version-check', '--ignore-engines']); // many peer dependencies, there shouldn't be any peerDep warnings
 }