Delete Functions v2 and v3 Smoke Tests (#3012)

* initial commit

* update pr template

.github/pull_request_template.md

@@ -21,5 +21,5 @@ resolves #issue_for_this_pr
     * [ ] Otherwise: major or minor version updates are reflected in `/src/Worker.Extensions.DurableTask/AssemblyInfo.cs`
 * [ ] My changes **do not** add EventIds to our EventSource logs
     * [ ] Otherwise: Ensure the EventIds are within the supported range in our existing Windows infrastructure. You may validate this with a deployed app's telemetry. You may also extend the range by completing a PR such as [this one](https://msazure.visualstudio.com/One/_git/AAPT-Antares-Websites/pullrequest/7463263?_a=files).
-* [ ] My changes **should** be added to v3.x branch.
-    * [ ] Otherwise: This change only applies to Durable Functions v2.x and **will not** be merged to branch v3.x.
+* [ ] My changes **should** be added to **v2.x** branch.
+    * [ ] Otherwise: This change applies exclusively to WebJobs.Extensions.DurableTask v3.x. It will be retained only in the `dev` and `main` branches and will not be merged into the `v2.x` branch.

WebJobs.Extensions.DurableTask.sln

@@ -75,8 +75,6 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "pipelines", "pipelines", "{
 	ProjectSection(SolutionItems) = preProject
 		azure-pipelines.yml = azure-pipelines.yml
 		.github\workflows\smoketest-dotnet-isolated-v4.yml = .github\workflows\smoketest-dotnet-isolated-v4.yml
-		.github\workflows\smoketest-dotnet-v2.yml = .github\workflows\smoketest-dotnet-v2.yml
-		.github\workflows\smoketest-dotnet-v3.yml = .github\workflows\smoketest-dotnet-v3.yml
 		.github\workflows\smoketest-node14-v4.yml = .github\workflows\smoketest-node14-v4.yml
 		.github\workflows\smoketest-python37-v4.yml = .github\workflows\smoketest-python37-v4.yml
 	EndProjectSection