ci: remove appveyor config

bon voyage

appveyor.yml

@@ -1,94 +0,0 @@
-version: build-{build}
-branches:
-  only:
-  - dev
-image:
-- Visual Studio 2017
-- Ubuntu
-
-nuget:
-  disable_publish_on_pr: true
-pull_requests:
-  do_not_increment_build_number: true
-# Use the default clone_folder
-# Windows: C:\Projects\discord-net
-# Ubuntu: /home/appveyor/projects/discord-net
-cache: test/Discord.Net.Tests/cache.db
-
-environment:
-  DOTNET_CLI_TELEMETRY_OPTOUT: 1
-  DNET_TEST_TOKEN:
-    secure: l7h5e7UE7yRd70hAB97kjPiQpPOShwqoBbOzEAYQ+XBd/Pre5OA33IXa3uisdUeQJP/nPFhcOsI+yn7WpuFaoQ==
-  DNET_TEST_GUILDID: 273160668180381696
-init:
-- ps: $Env:BUILD = "$($Env:APPVEYOR_BUILD_NUMBER.PadLeft(5, "0"))"
-
-build_script:
-- ps: >-
-    if ($isLinux)
-    {
-      # AppVeyor Linux images do not have appveyor-retry, which retries the commands a few times
-      # until the command exits with code 0.
-      # So, this is done with a short script.
-      $code = 0
-      $counter = 0
-      do
-      {
-        dotnet restore Discord.Net.sln -v Minimal /p:BuildNumber="$Env:BUILD" /p:IsTagBuild="$Env:APPVEYOR_REPO_TAG"
-        $code = $LASTEXITCODE
-        $counter++
-        if ($code -ne 0)
-        {
-          # Wait 5s before attempting to run again
-          Start-sleep -Seconds 5
-        }
-      }
-      until ($counter -eq 5 -or $code -eq 0)
-    }
-    else
-    {
-      appveyor-retry dotnet restore Discord.Net.sln -v Minimal /p:BuildNumber="$Env:BUILD" /p:IsTagBuild="$Env:APPVEYOR_REPO_TAG"
-    }
-- ps: dotnet build Discord.Net.sln -c "Release" /p:BuildNumber="$Env:BUILD" /p:IsTagBuild="$Env:APPVEYOR_REPO_TAG"
-after_build:
-- ps: if ($isWindows) { dotnet pack "src\Discord.Net.Core\Discord.Net.Core.csproj" -c "Release" -o "../../artifacts" --no-build /p:BuildNumber="$Env:BUILD" /p:IsTagBuild="$Env:APPVEYOR_REPO_TAG" }
-- ps: if ($isWindows) { dotnet pack "src\Discord.Net.Rest\Discord.Net.Rest.csproj" -c "Release" -o "../../artifacts" --no-build /p:BuildNumber="$Env:BUILD" /p:IsTagBuild="$Env:APPVEYOR_REPO_TAG" }
-- ps: if ($isWindows) { dotnet pack "src\Discord.Net.WebSocket\Discord.Net.WebSocket.csproj" -c "Release" -o "../../artifacts" --no-build /p:BuildNumber="$Env:BUILD" /p:IsTagBuild="$Env:APPVEYOR_REPO_TAG" }
-- ps: if ($isWindows) { dotnet pack "src\Discord.Net.Commands\Discord.Net.Commands.csproj" -c "Release" -o "../../artifacts" --no-build /p:BuildNumber="$Env:BUILD" /p:IsTagBuild="$Env:APPVEYOR_REPO_TAG" }
-- ps: if ($isWindows) { dotnet pack "src\Discord.Net.Webhook\Discord.Net.Webhook.csproj" -c "Release" -o "../../artifacts" --no-build /p:BuildNumber="$Env:BUILD" /p:IsTagBuild="$Env:APPVEYOR_REPO_TAG" }
-- ps: if ($isWindows) { dotnet pack "src\Discord.Net.Providers.WS4Net\Discord.Net.Providers.WS4Net.csproj" -c "Release" -o "../../artifacts" --no-build /p:BuildNumber="$Env:BUILD" /p:IsTagBuild="$Env:APPVEYOR_REPO_TAG" }
-- ps: if ($isWindows) { dotnet pack "src\Discord.Net.Analyzers\Discord.Net.Analyzers.csproj" -c "Release" -o "../../artifacts" --no-build /p:BuildNumber="$Env:BUILD" /p:IsTagBuild="$Env:APPVEYOR_REPO_TAG" }
-- ps: >-
-    if ($isWindows)
-    {
-      if ($Env:APPVEYOR_REPO_TAG -eq "true") {
-        nuget pack src/Discord.Net/Discord.Net.nuspec -OutputDirectory "artifacts" -properties suffix=""
-      } else {
-        nuget pack src/Discord.Net/Discord.Net.nuspec -OutputDirectory "artifacts" -properties suffix="-$Env:BUILD"
-      }
-    }
-- ps: if ($isWindows) { Get-ChildItem artifacts/*.nupkg | % { Push-AppveyorArtifact $_.FullName -FileName $_.Name } }
-
-test_script:
-- ps: >-
-    if ($APPVEYOR_PULL_REQUEST_NUMBER -eq "") {
-      dotnet test test/Discord.Net.Tests/Discord.Net.Tests.csproj -c "Release" --no-build /p:BuildNumber="$Env:BUILD" /p:IsTagBuild="$Env:APPVEYOR_REPO_TAG"
-    }
-
-deploy:
-- provider: NuGet
-  server: https://www.myget.org/F/discord-net/api/v2/package
-  api_key:
-    secure: Jl7BXeUjRnkVHDMBuUWSXcEOkrli1PBleW2IiLyUs5j63UNUNp1hcjaUJRujx9lz
-  symbol_server: https://www.myget.org/F/discord-net/symbols/api/v2/package
-  on:
-    branch: dev
-    CI_WINDOWS: true
-- provider: NuGet
-  server: https://www.myget.org/F/rogueexception/api/v2/package
-  api_key:
-    secure: D+vW2O2LBf/iJb4f+q8fkyIW2VdIYIGxSYLWNrOD4BHlDBZQlJipDbNarWjUr2Kn
-  symbol_server: https://www.myget.org/F/rogueexception/symbols/api/v2/package
-  on:
-    branch: dev
-    CI_WINDOWS: true