remove powershell tests from appveyor.yml

Author: wing328

appveyor.yml

@@ -13,7 +13,6 @@ install:
   - cmd: docker run -d -e SWAGGER_HOST=http://petstore.swagger.io -e SWAGGER_BASE_PATH=/v2 -p 80:8080 swaggerapi/petstore 
   - ps: Start-Sleep -s 120
   - ps: $PSVersionTable.PSVersion
-  - ps: Install-Module -Name Pester -Force -Scope CurrentUser -SkipPublisherCheck
 build_script:
   - dotnet --info
   # build C# aspnetcore 5.0 server
@@ -108,11 +107,6 @@ test_script:
   # - .\bin\windows\run-all-petstore.cmd
   # generate all petstore clients (openapi3)
   # - .\bin\openapi3\windows\run-all-petstore.cmd
-
-  # test ps petstore
-  - ps: |
-      cd samples\client\petstore\powershell\
-      .\CIRunTest.ps1
 cache:
   - C:\maven\
   - C:\gradle\