[TD]remove highlight on deletion of detail

src/Mod/TechDraw/App/DrawViewDetail.cpp

@@ -117,7 +117,6 @@ DrawViewDetail::DrawViewDetail()
     //hide Properties not relevant to DVDetail
     Direction.setStatus(App::Property::ReadOnly,true);   //Should be same as BaseView
     Rotation.setStatus(App::Property::ReadOnly,true);    //same as BaseView
-
 }
 
 DrawViewDetail::~DrawViewDetail()
@@ -420,6 +419,17 @@ bool DrawViewDetail::debugDetail(void) const
     return result;
 }
 
+void DrawViewDetail::unsetupObject()
+{
+//    Base::Console().Message("DVD::unsetupObject()\n");
+    App::DocumentObject* baseObj = BaseView.getValue();
+    DrawView* base = dynamic_cast<DrawView*>(baseObj);
+    if (base != nullptr) {
+        base->requestPaint();
+    }
+
+}
+
 
 void DrawViewDetail::getParameters()
 {