Remove obsolate double book keeping of widgets in class UMLScene.
QGraphicsScene already holds all widgets; there is no need to maintain additional lists, which may go out of sync and are therefore unreliable.
parent
1f118cb4
QGraphicsScene already holds all widgets; there is no need to maintain additional lists, which may go out of sync and are therefore unreliable.
mentioned in commit 2ccf8540
·mentioned in commit 2ccf8540