Qnx: Check device connection when debugging

Move the device connection verification code from BlackBerryRunControl class
into BlackBerryApplicaitonRunner class.
This will setup a device connection if the device is not connected
when starting debugger.

Task-number: QTCREATORBUG-10309

Change-Id: I57db0e60039bb05f8467e925e71cf710a0712791
Reviewed-by: Nicolas Arnaud-Cormos <nicolas@kdab.com>
Reviewed-by: Tobias Nätterlund <tobias.naetterlund@kdab.com>
Qnx: Remove dead code

Change-Id: Iceaa438d65c671a2d1eff5b400fe15d14280c1e3
Reviewed-by: Nicolas Arnaud-Cormos <nicolas@kdab.com>