Don't import the .github directory from web-platform-tests

It's the upstream CI configuration and we don't need it.

Stop ignoring .travis.yml since that's gone upstream.

Change-Id: I1c1fb6f4f7f6658082406fd3e19a4d0456d614f5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1835359Reviewed-by: Robert Ma <robertma@chromium.org>
Commit-Queue: Robert Ma <robertma@chromium.org>
Cr-Commit-Position: refs/heads/master@{#702019}

third_party/blink/web_tests/W3CImportExpectations

@@ -10,8 +10,8 @@
 # https://chromium.googlesource.com/chromium/src/+/master/docs/testing/web_test_expectations.md
 
 external/wpt/.codecov.yml [ Skip ]
+external/wpt/.github [ Skip ]
 external/wpt/.gitmodules [ Skip ]
-external/wpt/.travis.yml [ Skip ]
 external/wpt/CODEOWNERS [ Skip ]
 external/wpt/WebIDL/invalid [ Skip ]
 external/wpt/WebIDL/readme.txt [ Skip ]

third_party/blink/web_tests/external/wpt/.github/META.yml

-suggested_reviewers:
-  - jgraham
-  - jugglinmike

third_party/blink/web_tests/external/wpt/.github/workflows/pull_request.yml

-on: pull_request
-name: Synchronize the Pull Request Preview
-jobs:
-  update-pr-preview:
-    runs-on: ubuntu-18.04
-    steps:
-    - uses: actions/checkout@v1
-      with:
-        ref: refs/heads/master
-        fetch-depth: 50
-    - name: update-pr-preview
-      uses: ./tools/docker/github
-      env:
-        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-      with:
-        entrypoint: python
-        args: tools/ci/update_pr_preview.py https://api.github.com

third_party/blink/web_tests/external/wpt/.github/workflows/push-build-publish-documentation-website.yml

-on:
-  push:
-    branches:
-      - master
-name: Build & Publish Documentation Website
-jobs:
-  website-build-and-publish:
-    runs-on: ubuntu-18.04
-    steps:
-    - uses: actions/checkout@v1
-      with:
-        fetch-depth: 50
-    - name: website-build-and-publish
-      uses: ./tools/docker/documentation
-      env:
-        DEPLOY_TOKEN: ${{ secrets.DEPLOY_TOKEN }}
-      with:
-        entrypoint: /bin/bash
-        args: tools/ci/website_build.sh

third_party/blink/web_tests/external/wpt/.github/workflows/push-build-release-manifest.yml

-on:
-  push:
-    branches:
-      - master
-name: Build & Release Manifest
-jobs:
-  manifest-build-and-tag:
-    runs-on: ubuntu-18.04
-    steps:
-    - uses: actions/checkout@v1
-      with:
-        fetch-depth: 50
-    - name: manifest-build-and-tag
-      uses: ./tools/docker/github
-      env:
-        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-      with:
-        entrypoint: python
-        args: tools/ci/manifest_build.py