Plugin minimalegl: Remove superfluous keys() function.

This is no longer needed in Qt 5.

Change-Id: I10a2b893fdc822a526abc19c3d1f0f2538de0d83
Reviewed-by: Jørgen Lind <jorgen.lind@digia.com>
Actually print when the tester pushes the print button

Change-Id: I5c995938a74f720be5beb33160488ec1ec73c0ff
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>