remove appveyor.yml

appveyor.yml

@@ -1,12 +0,0 @@
-version: 1.0.{build}
-configuration: Release
-platform:
-- x64
-- x86
-clone_folder: c:\go\path\src\github.com\tendermint\tendermint
-before_build:
-- cmd: set GOPATH=%GOROOT%\path
-- cmd: set PATH=%GOPATH%\bin;%PATH%
-build_script:
-- cmd: make test
-test: off