Remove untested ARM platform
Remove untested ARM platform

Since we have no means of testing the ARM platform, we removed it for now.
It was also the default platform, which was a little unfortunate, since it
prevented the test app to run on the local machine without manually
changing the platform.

roryok/SQLite3-WinRT,roryok/SQLite3-WinRT,roryok/SQLite3-WinRT,doo/SQLite3-WinRT,doo/SQLite3-WinRT,roryok/SQLite3-WinRT,doo/SQLite3-WinRT