TaskDlgEditSketch: Remove unnecessary recompute

===============================================

On Undo/Redo there should not be an unconditional recompute.

The need for this recompute is probably related to the fact that PropertyConstraintList
has invalid geometry keys.

src/Mod/Sketcher/Gui/TaskDlgEditSketch.cpp

@@ -32,7 +32,6 @@
 #include <Gui/Command.h>
 
 using namespace SketcherGui;
-namespace bp = boost::placeholders;
 
 
 //**************************************************************************
@@ -73,36 +72,17 @@ TaskDlgEditSketch::TaskDlgEditSketch(ViewProviderSketch *sketchView)
         Constraints->hideGroupBox();
     if (!hGrp->GetBool("ExpandedElementsWidget",true))
         Elements->hideGroupBox();
-
-    App::Document* document = sketchView->getObject()->getDocument();
-    connectUndoDocument =
-        document->signalUndo.connect(boost::bind(&TaskDlgEditSketch::slotUndoDocument, this, bp::_1));
-    connectRedoDocument =
-        document->signalRedo.connect(boost::bind(&TaskDlgEditSketch::slotRedoDocument, this, bp::_1));
 }
 
 TaskDlgEditSketch::~TaskDlgEditSketch()
 {
-    connectUndoDocument.disconnect();
-    connectRedoDocument.disconnect();
-
     // to make sure to delete the advanced solver panel
     // it must be part to the 'Content' array
     std::vector<QWidget*>::iterator it = std::find(Content.begin(), Content.end(), SolverAdvanced);
     if (it == Content.end())
         Content.push_back(SolverAdvanced);
 }
 
-void TaskDlgEditSketch::slotUndoDocument(const App::Document& doc)
-{
-    const_cast<App::Document&>(doc).recomputeFeature(sketchView->getObject());
-}
-
-void TaskDlgEditSketch::slotRedoDocument(const App::Document& doc)
-{
-    const_cast<App::Document&>(doc).recomputeFeature(sketchView->getObject());
-}
-
 //==== calls from the TaskView ===============================================================
 
 
@@ -129,7 +109,7 @@ bool TaskDlgEditSketch::reject()
     hGrp->SetBool("ExpandedEditControlWidget",General->isGroupVisible());
     hGrp->SetBool("ExpandedConstraintsWidget",Constraints->isGroupVisible());
     hGrp->SetBool("ExpandedElementsWidget",Elements->isGroupVisible());
-    
+
     std::string document = getDocumentName(); // needed because resetEdit() deletes this instance
     Gui::Command::doCommand(Gui::Command::Gui,"Gui.getDocument('%s').resetEdit()", document.c_str());
     Gui::Command::doCommand(Gui::Command::Doc,"App.getDocument('%s').recompute()", document.c_str());

src/Mod/Sketcher/Gui/TaskDlgEditSketch.h

@@ -62,7 +62,7 @@ class SketcherGuiExport TaskDlgEditSketch : public Gui::TaskView::TaskDialog
     virtual bool isAllowedAlterDocument(void) const
     { return false; }
 
-    /// returns for Close and Help button 
+    /// returns for Close and Help button
     virtual QDialogButtonBox::StandardButtons getStandardButtons(void) const
     { return QDialogButtonBox::Close; }
 
@@ -77,8 +77,6 @@ class SketcherGuiExport TaskDlgEditSketch : public Gui::TaskView::TaskDialog
     TaskSketcherGeneral     *General;
     TaskSketcherMessages    *Messages;
     TaskSketcherSolverAdvanced *SolverAdvanced;
-    Connection connectUndoDocument;
-    Connection connectRedoDocument;
 };