removed unused imports

src/simudator/gui/module_graphics_item/memory_graphic.py

-import traceback
 from enum import Enum
 from math import ceil
 
@@ -9,13 +8,10 @@ from qtpy.QtWidgets import (
     QAction,
     QButtonGroup,
     QErrorMessage,
-    QFrame,
     QGraphicsRectItem,
     QGraphicsSimpleTextItem,
     QHBoxLayout,
     QHeaderView,
-    QMainWindow,
-    QPushButton,
     QRadioButton,
     QTableWidget,
     QTableWidgetItem,