Fix appveyor

appveyor.yml

@@ -9,8 +9,6 @@ environment:
     CMD_IN_ENV: "cmd /E:ON /V:ON /C .\\ci_scripts\\appveyor\\run_with_env.cmd"
     MODULE: xgp
     PROJECT_NAME: xgp
-    GOPATH: c:\gopath
-    GOVERSION: 1.10
 
   matrix:
 
@@ -25,17 +23,8 @@ environment:
       MINICONDA: "C:\\Miniconda35-x64"
 
 install:
-  # Install Go
-  - "rmdir C:\\go /s /q"
-  - "appveyor DownloadFile https://storage.googleapis.com/golang/go%GOVERSION%.windows-amd64.msi"
-  - "msiexec /i go%GOVERSION%.windows-amd64.msi /q"
-  - "choco install bzr"
-  - "SET PATH=C:\\go\\bin;%GOPATH%\\bin;C:\\Program Files (x86)\\Bazaar\\;C:\\Program File\\s\\Mercurial\\%PATH%"
-  - "go version"
-  - "go env"
-
   # Set GCC path
-  - "SET PATH=C:\\cygwin64\\bin;%PATH%"
+  - "SET PATH=C:\\msys64\\bin;%PATH%"
 
   # Miniconda is pre-installed in the worker build
   - "SET PATH=%MINICONDA%;%MINICONDA%\\Scripts;%PATH%"