Disable android package by default

Do not enable the android package by default in the online installer
on Windows.

Change-Id: I776979db97c1d8ce88c0c059e0439570e078caf3
Reviewed-by: Akseli Salovaara <akseli.salovaara@digia.com>
Reviewed-by: Jani Heikkinen <jani.heikkinen@theqtcompany.com>