Remove qisrc manifest --checkout, use qisrc checkout instead

That was a mistake ...

Change-Id: I7045309fbb2fdf4f95a44a3ec38a96fc6af54ac5
Reviewed-on: http://gerrit.aldebaran.lan/30033
Tested-by: gerrit
Reviewed-by: vbarbaresi <vbarbaresi@aldebaran-robotics.com>
qibuild v3.1.2

Change-Id: Ibccee2bee081ced652edb3e989d7d633df083836
Reviewed-on: http://gerrit.aldebaran.lan/30061
Tested-by: gerrit
Reviewed-by: dmerejkowsky <dmerejkowsky@aldebaran-robotics.com>
Tested-by: dmerejkowsky <dmerejkowsky@aldebaran-robotics.com>