#23 comment out the choco install

Author: thangchung

appveyor.yml

@@ -36,7 +36,7 @@ before_build:
   - cmd: dotnet restore --verbosity m
 
 build_script:
-  - ps: choco install dotnetcore-sdk --no-progress --confirm --version 2.1.403
+  #- ps: choco install dotnetcore-sdk --no-progress --confirm --version 2.1.403
   - ps: ./build.ps1
 
 test: off