Remove mac/linux agents

We can't build off Windows anyway due to: novotnyllc/MSBuildSdkExtras#224

azure-pipelines/build.yml

@@ -13,33 +13,32 @@ jobs:
     displayName: Set build number
 
   - template: dotnet.yml
-  - template: expand-template.yml
 
 - job: Linux
+  condition: false
   pool:
     vmImage: Ubuntu 18.04
   steps:
   - checkout: self
     clean: true
   - template: install-dependencies.yml
   - template: dotnet.yml
-  - template: expand-template.yml
 
 - job: macOS
+  condition: false
   pool:
     vmImage: macOS-10.15
   steps:
   - checkout: self
     clean: true
   - template: install-dependencies.yml
   - template: dotnet.yml
-  - template: expand-template.yml
 
 - job: WrapUp
   dependsOn:
   - Windows
-  - Linux
-  - macOS
+  # - Linux
+  # - macOS
   pool:
     vmImage: Ubuntu 18.04
   condition: succeededOrFailed()

azure-pipelines/publish-codecoverage.yml

@@ -3,14 +3,14 @@ steps:
   artifact: coverageResults-Windows
   displayName: Download Windows code coverage results
   continueOnError: true
-- download: current
-  artifact: coverageResults-Linux
-  displayName: Download Linux code coverage results
-  continueOnError: true
-- download: current
-  artifact: coverageResults-macOS
-  displayName: Download macOS code coverage results
-  continueOnError: true
+# - download: current
+#   artifact: coverageResults-Linux
+#   displayName: Download Linux code coverage results
+#   continueOnError: true
+# - download: current
+#   artifact: coverageResults-macOS
+#   displayName: Download macOS code coverage results
+#   continueOnError: true
 - powershell: |
     dotnet tool install --tool-path obj dotnet-reportgenerator-globaltool --version 4.2.2 --configfile azure-pipelines/justnugetorg.nuget.config
     Copy-Item -Recurse $(Pipeline.Workspace)/coverageResults-Windows/obj/* $(System.DefaultWorkingDirectory)/obj