remove busted AppVeyor config

appveyor.yaml

@@ -1,26 +0,0 @@
-# http://www.appveyor.com/docs/appveyor-yml
-
-environment:
-  matrix:
-    - nodejs_version: "0.10"
-    - nodejs_version: "0.11"
-
-install:
-  # prerequisites
-  - ps: Install-Product node $env:nodejs_version
-  # module dependencies
-  - npm install
-  - npm install -g gulp
-
-test_script:
-  # log some useful debugging info
-  - node --version
-  - npm --version
-  - node jsdoc.js --version
-  # run tests
-  - cmd: npm test
-
-# we're just running test scripts, not compiling anything
-build: off
-
-version: "{build}"