avoid silx 0.13.0 PlotWidget.removeItem deprecation warning

xsocs/gui/silx_imports/ImageRois.py

@@ -133,7 +133,7 @@ class RoiItemBase(qt.QObject):
             for item in self._handles:
                 self._plot.removeMarker(item)
         if shape:
-            self._plot.removeItem(self._name)
+            self._plot.remove(self._name, kind="item")
 
     def _interactiveModeChanged(self, source):
         if source is not self or source is not self.parent():