Remove both Travis and sourcehut build config

.build.yml

@@ -1,12 +0,0 @@
-image: debian/testing
-packages:
-  - golang-go
-sources:
-  - https://git.sr.ht/~eriol/mvshaker
-tasks:
-  - vet: |
-      cd mvshaker
-      go vet
-  - build: |
-      cd mvshaker
-      go test -v

.travis.yml

@@ -1,17 +0,0 @@
-sudo: false
-language: go
-go:
-  - 1.3
-  - 1.4
-  - 1.5
-  - tip
-before_install:
-  - mkdir -p $HOME/gopath/src/eriol.xyz
-  - mv $TRAVIS_BUILD_DIR $HOME/gopath/src/eriol.xyz/mvshaker
-  - export TRAVIS_BUILD_DIR=$HOME/gopath/src/eriol.xyz/mvshaker
-  - cd $TRAVIS_BUILD_DIR
-  - go get golang.org/x/tools/cmd/cover
-  - go get github.com/axw/gocov/gocov
-  - go get github.com/mattn/goveralls
-script:
-    - $HOME/gopath/bin/goveralls -v -service=travis-ci