Delete unused code line

Author: HugoCLSC

BlocksScreen/lib/utils/blocks_button.py

@@ -159,13 +159,9 @@ def paintEvent(self, e: typing.Optional[QtGui.QPaintEvent]):
 
             tinted_icon_pixmap = QtGui.QPixmap(_icon_scaled.size())
             tinted_icon_pixmap.fill(QtCore.Qt.GlobalColor.transparent)
-
-            margin = _style.pixelMetric(_style.PixelMetric.PM_ButtonMargin, opt, self)
-
             if not self.isEnabled():
                 tinted_icon_pixmap = QtGui.QPixmap(_icon_scaled.size())
                 tinted_icon_pixmap.fill(QtCore.Qt.GlobalColor.transparent)
-
                 icon_painter = QtGui.QPainter(tinted_icon_pixmap)
                 icon_painter.setRenderHint(QtGui.QPainter.RenderHint.Antialiasing)
                 icon_painter.setRenderHint(