Remove appveyor.yml

appveyor.yml

-# Notes:
-#   - Minimal appveyor.yml file is an empty file. All sections are optional.
-#   - Indent each level of configuration with 2 spaces. Do not use tabs!
-#   - All section names are case-sensitive.
-#   - Section names should be unique on each level.
-
-#---------------------------------#
-#      general configuration      #
-#---------------------------------#
-
-# version format
-#version: 0.10.{build}
-
-# branches to build
-branches:
-  # blacklist
-  except:
-    - gh-pages
-
-# Do not build on tags (GitHub only)
-skip_tags: true
-
-#---------------------------------#
-#    environment configuration    #
-#---------------------------------#
-
-os: Windows Server 2012
-
-# scripts that run after cloning repository
-install:
-  # install Win-Flex-Bison
-  #- cmd: cinst winflexbison -y
-
-#---------------------------------#
-#       build configuration       #
-#---------------------------------#
-
-# scripts to run before build
-before_build:
-  - cmd: cmake .
-
-# scripts to run *after* solution is built and *before* automatic packaging occurs (web apps, NuGet packages, Azure Cloud Services)
-# before_package:
-
-# scripts to run after build
-# after_build:
-
-# to run your custom scripts instead of automatic MSBuild
-build_script:
-  - cmd: cmake --build .
-
-# to disable automatic builds
-# build: off