Run Danger and OSSCheck on MacStadium instead of on Azure Pipelines (r…

…ealm#2941)

This will allow us to run OSSCheck on a bare metal Mac, which should
make the OSSCheck performance results more reliable than running on
virtual machines from Azure Pipelines.

README.md

@@ -490,3 +490,8 @@ We :heart: open source software!
 See [our other open source projects](https://github.com/realm),
 read [our blog](https://realm.io/news), or say hi on twitter
 ([@realm](https://twitter.com/realm)).
+
+<img src="assets/macstadium.png" width="184" />
+
+Our thanks to MacStadium for providing a Mac Mini to run our performance
+tests.

azure-pipelines.yml

@@ -82,19 +82,6 @@ jobs:
     - script: bundle exec pod lib lint --verbose SwiftLintFramework.podspec
       displayName: pod lib lint
 
-- job: OSSCheck
-  pool:
-    vmImage: 'macOS 10.14'
-  variables:
-    DEVELOPER_DIR: /Applications/Xcode_11.1.app
-  steps:
-    - script: bundle install --path vendor/bundle
-      displayName: bundle install
-    - script: bundle exec danger --verbose
-      displayName: Run Danger
-      env:
-        DANGER_GITHUB_API_TOKEN: $(DANGER_GITHUB_API_TOKEN)
-
 - job: Analyze
   pool:
     vmImage: 'macOS 10.14'