chore: remove appveyor

appveyor.yml

@@ -1,45 +0,0 @@
-# http://www.appveyor.com/docs/appveyor-yml
-
-# Test against these versions of Node.js.
-environment:
-  matrix:
-    - nodejs_version: "6"
-    - nodejs_version: "8"
-    - nodejs_version: "10"
-#    - nodejs_version: "12"
-#    - nodejs_version: "13"
-
-pull_requests:
-  do_not_increment_build_number: true
-
-platform: Any CPU
-shallow_clone: true
-
-# Install scripts. (runs after repo cloning)
-install:
-  # Install Redis
-  - nuget install redis-64 -excludeversion
-  - redis-64\tools\redis-server.exe --service-install
-  - redis-64\tools\redis-server.exe --service-start
-  - '@ECHO Redis Started'
-  # Get the required Node version
-  - ps: Install-Product node $env:nodejs_version
-  # Typical npm stuff
-  - npm install
-
-# Post-install test scripts.
-test_script:
-  # Output useful info for debugging.
-  - node --version
-  - npm --version
-  - cmd: npm t
-
-os:
-  - Default Azure
-  - Windows Server 2012 R2
-
-# Don't actually build using MSBuild
-build: off
-
-# Set build version format here instead of in the admin panel.
-version: "{build}"