try to squash GCC compile error

src/Mod/PartDesign/Gui/TaskChamferParameters.cpp

@@ -178,7 +178,6 @@ void TaskChamferParameters::onRefDeleted(void)
 
     // delete the selection backwards to assure the list index keeps valid for the deletion
     for (int i = selectedList.count() - 1; i > -1; i--) {
-        QListWidgetItem* item = selectedList.at(i);
         // get the fillet object
         PartDesign::Chamfer* pcChamfer = static_cast<PartDesign::Chamfer*>(DressUpView->getObject());
         App::DocumentObject* base = pcChamfer->Base.getValue();

src/Mod/PartDesign/Gui/TaskDraftParameters.cpp

@@ -252,7 +252,6 @@ void TaskDraftParameters::onRefDeleted(void)
 
     // delete the selection backwards to assure the list index keeps valid for the deletion
     for (int i = selectedList.count() - 1; i > -1; i--) {
-        QListWidgetItem* item = selectedList.at(i);
         // get the fillet object
         PartDesign::Draft* pcDraft = static_cast<PartDesign::Draft*>(DressUpView->getObject());
         App::DocumentObject* base = pcDraft->Base.getValue();

src/Mod/PartDesign/Gui/TaskDressUpParameters.cpp

@@ -25,8 +25,10 @@
 #include "PreCompiled.h"
 
 #ifndef _PreComp_
+# include <QApplication>
 # include <QListWidget>
 # include <QListWidgetItem>
+# include <QTimer>
 #endif
 
 #include <boost/algorithm/string/predicate.hpp>

src/Mod/PartDesign/Gui/TaskFilletParameters.cpp

@@ -178,7 +178,6 @@ void TaskFilletParameters::onRefDeleted(void)
 
     // delete the selection backwards to assure the list index keeps valid for the deletion
     for (int i = selectedList.count()-1; i > -1; i--) {
-        QListWidgetItem* item = selectedList.at(i);
         // get the fillet object
         PartDesign::Fillet* pcFillet = static_cast<PartDesign::Fillet*>(DressUpView->getObject());
         App::DocumentObject* base = pcFillet->Base.getValue();

src/Mod/PartDesign/Gui/TaskThicknessParameters.cpp

@@ -200,7 +200,6 @@ void TaskThicknessParameters::onRefDeleted(void)
 
     // delete the selection backwards to assure the list index keeps valid for the deletion
     for (int i = selectedList.count() - 1; i > -1; i--) {
-        QListWidgetItem* item = selectedList.at(i);
         // get the fillet object
         PartDesign::Thickness* pcThickness = static_cast<PartDesign::Thickness*>(DressUpView->getObject());
         App::DocumentObject* base = pcThickness->Base.getValue();