appveyor: ignore squirrel artifacts

The squirrel artifats produced (nupkg, RELEASES and exe) are not ready
for deployment as they depend on the .net core runtime being installed.
We remove them temporarily from the build artifacts to avoid confusion,
until this issue has been addressed.

Author: JohnTheGr8

appveyor.yml

@@ -34,12 +34,6 @@ build:
   verbosity: minimal
 
 artifacts:
-- path: 'Output\Packages\*.exe'
-  name: Setup File
-- path: 'Output\Packages\*.nupkg'
-  name: Squirrel nupkg
-- path: 'Output\Packages\RELEASES'
-  name: Squirrel RELEASES
 - path: 'Output\Packages\Flow-Launcher-*.zip'
   name: Zip
 - path: 'Output\Release\Flow.Launcher.Plugin.*.nupkg'