Remove travis, contributes 0 value right now due to always failing and blocks us from seeing green PRs and commits.

.travis.yml

@@ -1,23 +0,0 @@
-dist: trusty
-sudo: false
-
-branches:
-  only:
-  - master
-
-language: go
-
-go:
-  - "1.14.x"
-
-before_install:
-  - go get github.com/mattn/goveralls
-
-install:
-  - make deps
-
-script:
-  - hack/verify-codegen.sh
-  - travis_wait 20 go test -race -covermode atomic -coverprofile=profile.cov ./pkg/... -v
-  - goveralls -coverprofile=profile.cov -service=travis-ci -v
-  - make e2e