Remove unneeded steps from appveyor.yml

Author: trflynn89

appveyor.yml

@@ -2,10 +2,6 @@ version: "{build}"
 
 os: Visual Studio 2015
 
-install:
-  - ps: $env:libfly_version = (Get-Content -Raw -Path VERSION.md)
-  - ps: Update-AppveyorBuild -Version "$env:libfly_version-$env:APPVEYOR_BUILD_NUMBER"
-
 build_script:
   - cmd: build\win\release.bat