ci: disable py2 in appveyor

Author: sbinet

Diff for: appveyor.yml

@@ -13,24 +13,23 @@ branches:
 environment:
   GOPATH: c:\gopath
   GOPY_APPVEYOR_CI: '1'
-  GODEBUG: 'cgocheck=0'
   GOTRACEBACK: 'crash'
-  PYTHONUNBUFFERED: "1"
-  CPYTHON2DIR: "C:\\Python27-x64"
+  #CPYTHON2DIR: "C:\\Python27-x64"
   CPYTHON3DIR: "C:\\Python37-x64"
-  PATH: '%GOPATH%\bin;%CPYTHON2DIR%;%CPYTHON2DIR%\\Scripts;%CPYTHON3DIR%;%CPYTHON3DIR%\\Scripts;C:\msys64\mingw64\bin;C:\msys64\usr\bin\;%PATH%'
+  #PATH: '%GOPATH%\bin;%CPYTHON2DIR%;%CPYTHON2DIR%\\Scripts;%CPYTHON3DIR%;%CPYTHON3DIR%\\Scripts;C:\msys64\mingw64\bin;C:\msys64\usr\bin\;%PATH%'
+  PATH: '%GOPATH%\bin;%CPYTHON3DIR%;%CPYTHON3DIR%\\Scripts;C:\msys64\mingw64\bin;C:\msys64\usr\bin\;%PATH%'
 
-stack: go 1.11
+stack: go 1.12
 
 build_script:
   - python --version
-  - "%CPYTHON2DIR%\\python --version"
+    #- "%CPYTHON2DIR%\\python --version"
   - "%CPYTHON3DIR%\\python --version"
-  - "%CPYTHON2DIR%\\python -m pip install --upgrade pip"
+    #- "%CPYTHON2DIR%\\python -m pip install --upgrade pip"
   - "%CPYTHON3DIR%\\python -m pip install --upgrade pip"
-  - "%CPYTHON2DIR%\\python -m pip install cffi"
+    #- "%CPYTHON2DIR%\\python -m pip install cffi"
   - "%CPYTHON3DIR%\\python -m pip install cffi"
-  - "%CPYTHON2DIR%\\python -m pip install pybindgen"
+    #- "%CPYTHON2DIR%\\python -m pip install pybindgen"
   - "%CPYTHON3DIR%\\python -m pip install pybindgen"
   - go get -v -t ./...