Remove Travis CI integration

travis-ci.org stopped working since 2021-06.

Bug: None
Change-Id: I27a64a39fecadb9a9540d06aac6f346ad42b7f2e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/dom-distiller/+/3133362
Reviewed-by: Matt Jones <mdjones@chromium.org>
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index f20e263..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,32 +0,0 @@
-sudo: required
-
-# Ubuntu 18.04 (Bionic)
-dist: bionic
-
-language: java
-
-before_install: git log --oneline -n 5
-
-install:
-  - google-chrome --version
-  - sudo ./install-build-deps.sh
-  # Fix the Java environment in Travis CI. Ubuntu 18.04 uses JDK 11 and cannot downgrade to 8.
-  - unset JAVA_HOME
-
-script:
-  # Use system python for protobuf package.
-  - export PATH='/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin'
-  - hooks/pre-commit
-  - which java
-  - java -Xmx32m -version
-  - javac -J-Xmx32m -version
-  - google-chrome --version
-  - ant test -Dtest.shuffle=1 -Dtest.repeat=10
-  - ant package
-
-# Each item under env is a testing environment.
-env:
-  # Use stock version of Chrome
-  - CHROME_MIN_VERSION=49
-  # Update to latest Chrome
-  - CHROME_MIN_VERSION=99
diff --git a/README.md b/README.md
index bf42061..93f9df5 100644
--- a/README.md
+++ b/README.md
@@ -50,12 +50,6 @@
 1.  Visit an article or article-like page, and a Reader Mode icon should appear
     in the omnibox. Click the icon to enter Reader Mode.
 
-## Continuous integration
-
-[![Build Status](https://travis-ci.org/chromium/dom-distiller.svg?branch=master)](https://travis-ci.org/chromium/dom-distiller)
-
-[Travis-CI waterfall](https://travis-ci.org/chromium/dom-distiller/builds)
-
 ## Environment setup
 
 You must install the build dependencies before building for the first time. The