Remove Travis CI

All tests and release work has been transferred to run on GitHub
Actions, like the rest of Subariner's repos.

Signed-off-by: Daniel Farrell <dfarrell@redhat.com>

.travis.yml

@@ -1,47 +0,0 @@
-language: python
-
-env:
-  global:
-    - HELM_URL=https://storage.googleapis.com/kubernetes-helm
-    - HELM_TGZ=helm-v2.14.3-linux-amd64.tar.gz
-    - TARGET_BR=gh-pages
-    - GH_URL=https://submariner-io.github.io/submariner-charts/charts
-    - CHARTS_DIR=charts
-    - YAMLLINT_VERSION=1.17.0
-    - HELM_FLAGS='--set submariner.serviceDiscovery=true,serviceAccounts.globalnet.create=true,globalCidr="169.254.0.0/16"'
-
-install:
-  - wget -q ${HELM_URL}/${HELM_TGZ}
-  - tar xzfv ${HELM_TGZ}
-  - PATH=`pwd`/linux-amd64/:$PATH
-  - helm init --client-only
-  - sudo pip install yamllint=="${YAMLLINT_VERSION}"
-
-script:
-  - for dir in submariner submariner-k8s-broker submariner-operator; do helm lint $dir $HELM_FLAGS; done
-  - yamllint -c .yamllint.yml -s $(find . -type f -name "Chart.yaml")
-  - yamllint -c .yamllint.yml -s $(find . -type f -name "values.yaml")
-
-after_success:
-  - >
-    if [ $TRAVIS_BRANCH = 'master' ] && [ $TRAVIS_PULL_REQUEST = 'false' ]; then
-      set -e
-      for dir in submariner submariner-k8s-broker submariner-operator; do
-        helm dep update $dir
-        helm package $dir
-      done
-      REPO_URL=`git config remote.origin.url`
-      git clone ${REPO_URL} out && cd out && git checkout gh-pages && mkdir -p ${CHARTS_DIR}
-      cp -f ../submariner-*.tgz ${CHARTS_DIR}/
-      if [ -f charts/index.yaml ]; then
-        helm repo index ${CHARTS_DIR} --url ${GH_URL} --merge index.yaml
-      else
-        helm repo index ${CHARTS_DIR} --url ${GH_URL}
-      fi
-      git config user.name "Travis CI"
-      git config user.email "travis@travis-ci.org"
-      git add -f ${CHARTS_DIR}/*
-      git commit -m "Travis build: $TRAVIS_BUILD_NUMBER"
-      git remote add origin-pages https://${GH_TOKEN}@github.com/submariner-io/submariner-charts.git > /dev/null 2>&1
-      git push --quiet -f -u origin-pages gh-pages
-    fi