removed unused lines

appveyor.yml

@@ -32,8 +32,6 @@ install:
   - if "%APPVEYOR_BUILD_WORKER_IMAGE%"=="Visual Studio 2015" set CMAKE_GENERATOR_NAME=Visual Studio 14 2015
   - if "%APPVEYOR_BUILD_WORKER_IMAGE%"=="Visual Studio 2017" set CMAKE_GENERATOR_NAME=Visual Studio 15 2017
   - if "%APPVEYOR_BUILD_WORKER_IMAGE%"=="Visual Studio 2019" set CMAKE_GENERATOR_NAME=Visual Studio 16 2019
-  #- set CMAKE_GENERATOR_PLATFORM=%platform%
-  #- if "%platform%"=="x64" set CMAKE_GENERATOR_NAME=%CMAKE_GENERATOR_NAME% Win64
   - cmake %CMAKE_DEFINES% -G "%CMAKE_GENERATOR_NAME%" -A %platform% .
   # Rename sh.exe as sh.exe in PATH interferes with MinGW
   - rename "C:\Program Files\Git\usr\bin\sh.exe" "sh2.exe"