We don't use appveyor anymore.
diff --git a/.appveyor.yml b/.appveyor.yml
deleted file mode 100644
index 870dc49..0000000
--- a/.appveyor.yml
+++ /dev/null
@@ -1,53 +0,0 @@
-version: 0.8.{build}
-environment:
-  global:
-    ASCIIDOCTOR_VER: 1.5.4
-    CFLAGS: /MP
-  matrix:
-    # array of all environments used to test builds
-    - GENERATOR: NMake Makefiles
-      CFG: Debug
-      VS_VERSION: 12.0
-    - GENERATOR: Visual Studio 14 2015
-      VS_VERSION: 14.0
-      CFG: Debug
-    - GENERATOR: Visual Studio 12 2013
-      VS_VERSION: 12.0
-      CFG: Debug
-    - GENERATOR: Visual Studio 14 2015 Win64
-      CFG: Debug
-      VS_VERSION: 14.0
-    - GENERATOR: Visual Studio 12 2013 Win64
-      CFG: Debug
-      VS_VERSION: 12.0
-
-cache:
-  - '%USERPROFILE%\asciidoctor-%ASCIIDOCTOR_VER%.gem -> .appveyor.yml'
-
-install:
-  # Gem fetching can sometimes be excruciatingly slow due to the rubygems database,
-  # so we have to manually download our target gem.
-  - ps: |
-      $asciidoctor = "$($env:USERPROFILE)\asciidoctor-$($env:ASCIIDOCTOR_VER).gem"
-      if (-not (Test-Path $asciidoctor)) {
-          $url = "https://rubygems.org/downloads/asciidoctor-$($env:ASCIIDOCTOR_VER).gem"
-          Write-Output "Downloading asciidoctor $env:ASCIIDOCTOR_VER from $url"
-          (New-Object Net.WebClient).DownloadFile($url, $asciidoctor)
-      }
-      gem install --no-document --local $asciidoctor
-
-# This section is a workaround for: https://github.com/nanomsg/nanomsg/issues/683
-before_build:
-  - del "C:\Program Files (x86)\MSBuild\%VS_VERSION%\Microsoft.Common.targets\ImportAfter\Xamarin.Common.targets"
-
-build:
-  parallel: true
-build_script:
-  - cmd: IF NOT %VS_VERSION% == NONE call "C:/Program Files (x86)/Microsoft Visual Studio %VS_VERSION%/Common7/Tools/vsvars32.bat"
-  - cmd: cmake --version
-  - cmd: md build
-  - cmd: cd build
-  - cmd: cmake -G "%GENERATOR%" ..
-  - cmd: cmake --build .
-test_script:
-  - cmd: ctest --output-on-failure -C "%CFG%"