Delete AppVeyor/Travis CI integration

.travis.yml

@@ -1,38 +0,0 @@
-language: node_js
-node_js: "12"
-env:
-  - ELECTRON_CACHE=$HOME/.cache/electron ELECTRON_BUILDER_CACHE=$HOME/.cache/electron-builder
-
-jobs:
-  include:
-    - os: osx
-      osx_image: xcode11.3
-    - os: linux
-      dist: xenial
-      services:
-        - xvfb
-
-cache:
-  yarn: false
-  directories:
-    - $HOME/.cache/electron
-    - $HOME/.cache/electron-builder
-
-script:
-  - |
-    yarn test
-    if [ "$TRAVIS_OS_NAME" == "linux" ]; then
-      yarn run release:linux
-    else
-      yarn run release:mac
-    fi
-before_cache:
-  - rm -rf $HOME/.cache/electron-builder
-before_install:
-  - rm -rf node_modules
-  # Install dependencies
-  - travis_wait 30 yarn --frozen-lockfile
-
-branches:
-  except:
-    - "/^v\\d+\\.\\d+\\.\\d+$/"

appveyor.yml

@@ -1,32 +0,0 @@
-image: Visual Studio 2019
-
-platform:
-  - x64
-
-cache:
-  - node_modules
-  - '%USERPROFILE%\.electron'
-
-init:
-  - git config --global core.autocrlf input
-
-install:
-  # Install node
-  - ps: Install-Product node 12 x64
-  # Install dependencies
-  - yarn --frozen-lockfile
-
-# on_finish:
-#   # Enable RDP to the build worker (using APPVEYOR_RDP_PASSWORD env var)
-#   # https://www.appveyor.com/docs/how-to/rdp-to-build-worker/
-#   - ps: $blockRdp = $true; iex ((new-object net.webclient).DownloadString('https://raw.githubusercontent.com/appveyor/ci/master/scripts/enable-rdp.ps1'))
-
-# @FIXME: tests disabled because app fails to launch on AppVeyor/Windows
-# os: unstable # https://github.com/electron-userland/spectron#on-appveyor
-# test_script:
-#   - yarn test
-
-build_script:
-  - yarn run release:win
-
-test: off