Fix appveyor syntax error

Author: natemcmaster

.appveyor.yml

@@ -26,7 +26,6 @@ deploy:
       secure: MIhcKhOCOJ64Cdf6S+uBuvKS0mSHsDSLxuXCAASqPDL/Wcgo8TAJMIR3p2Y4OqvP
     on:
       appveyor_repo_tag: true
-deploy:
   - provider: NuGet
     server: https://www.myget.org/F/natemcmaster/api/v2/package
     symbol_server: https://www.myget.org/F/natemcmaster/api/v2/package