Remove obsolete appveyor definition for cmd

appveyor-ilspycmd.yml

@@ -1,19 +0,0 @@
-platform: Any CPU
-configuration:
-- Debug
-- Release
-image: Visual Studio 2017
-install:
-- git submodule update --init --recursive
-- ps: .\BuildTools\appveyor-ilspycmd-install.ps1
-dotnet_csproj:
-  patch: true
-  file: 'ICSharpCode.Decompiler.Console\ICSharpCode.Decompiler.Console.csproj'
-  version: '{version}'
-  package_version: '{version}'
-before_build:
-- nuget restore ICSharpCode.Decompiler.Console.sln
-build_script:
-- msbuild ICSharpCode.Decompiler.Console.sln /v:minimal /p:ResolveNuGetPackages=false "/logger:%ProgramFiles%\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll"
-after_test:
-- python BuildTools\tidy.py