remove redundant badge creating code.

appveyor.yml

@@ -12,8 +12,6 @@ before_build:
 build_script:
 - cmd: dotnet --info
 - ps: path c:\dotnet
-- ps: $url1='https://img.shields.io/badge/version-v0.2.' + $env:APPVEYOR_BUILD_NUMBER  + '-blue.svg'
-- ps: .\download.ps1 $url1 "latest-version-badge.svg"
 - ps: .\build.ps1
 
 test: off