Deletes appveyor (#18930)

appveyor.yml

@@ -1,15 +0,0 @@
-version: '{build}'
-skip_branch_with_pr: true
-shallow_clone: true
-branches:
-  except:
-    - ___TGS3TempBranch
-    - ___TGSTempBranch
-cache:
-  - C:\byond\ -> dependencies.sh
-build_script:
-  - ps: tools/appveyor/build.ps1
-  - ps: "$deployPath = $env:APPVEYOR_BUILD_FOLDER + '/deploy'; bash tools/deploy.sh $deployPath" 
-  - ps: "[System.IO.Compression.ZipFile]::CreateFromDirectory($env:APPVEYOR_BUILD_FOLDER + '/deploy', $env:APPVEYOR_BUILD_FOLDER + '/deploy.zip')"
-artifacts:
-  - path: deploy.zip

tools/appveyor/build.ps1

@@ -1,10 +0,0 @@
-if (!(Test-Path -Path "C:/byond")) {
-	bash tools/appveyor/download_byond.sh
-	[System.IO.Compression.ZipFile]::ExtractToDirectory("C:/byond.zip", "C:/")
-	Remove-Item C:/byond.zip
-}
-
-Set-Location $env:APPVEYOR_BUILD_FOLDER
-
-&"C:/byond/bin/dm.exe" -max_errors 0 tgstation.dme
-exit $LASTEXITCODE

tools/appveyor/download_byond.sh

@@ -1,5 +0,0 @@
-#!/bin/bash
-set -e
-source dependencies.sh
-echo "Downloading BYOND version $BYOND_MAJOR.$BYOND_MINOR"
-curl "http://www.byond.com/download/build/$BYOND_MAJOR/$BYOND_MAJOR.${BYOND_MINOR}_byond.zip" -o C:/byond.zip