diff --git a/libs/ui/tool/kis_stabilized_events_sampler.h b/libs/ui/tool/kis_stabilized_events_sampler.h
--- a/libs/ui/tool/kis_stabilized_events_sampler.h
+++ b/libs/ui/tool/kis_stabilized_events_sampler.h
@@ -21,7 +21,6 @@
 
 #include <QScopedPointer>
 
-#include <functional>
 #include <boost/iterator/iterator_facade.hpp>
 
 #include "kritaui_export.h"
@@ -36,12 +35,9 @@
     KisStabilizedEventsSampler(int sampleTime = 1);
     ~KisStabilizedEventsSampler();
 
-    void setLineFunction(std::function<void(const KisPaintInformation &)> func);
-
     void clear();
     void addEvent(const KisPaintInformation &pi);
     void addFinishingEvent(int numSamples);
-    void processAllEvents();
 
 public:
     class iterator :
diff --git a/libs/ui/tool/kis_stabilized_events_sampler.cpp b/libs/ui/tool/kis_stabilized_events_sampler.cpp
--- a/libs/ui/tool/kis_stabilized_events_sampler.cpp
+++ b/libs/ui/tool/kis_stabilized_events_sampler.cpp
@@ -29,7 +29,6 @@
 {
     Private(int _sampleTime) : sampleTime(_sampleTime), elapsedTimeOverride(0) {}
 
-    std::function<void(const KisPaintInformation &)> paintLine;
     QElapsedTimer lastPaintTime;
     QList<KisPaintInformation> realEvents;
     int sampleTime;
@@ -47,11 +46,6 @@
 {
 }
 
-void KisStabilizedEventsSampler::setLineFunction(std::function<void(const KisPaintInformation &)> func)
-{
-    m_d->paintLine = func;
-}
-
 void KisStabilizedEventsSampler::clear()
 {
     if (!m_d->realEvents.isEmpty()) {
@@ -79,19 +73,6 @@
     m_d->realEvents.append(m_d->lastPaintInformation);
 }
 
-void KisStabilizedEventsSampler::processAllEvents()
-{
-    const int elapsed = m_d->lastPaintTime.restart();
-
-    const qreal alpha = qreal(m_d->realEvents.size()) / elapsed;
-
-    for (int i = 0; i < elapsed; i += m_d->sampleTime) {
-        const int k = qFloor(alpha * i);
-
-        m_d->paintLine(m_d->realEvents[k]);
-    }
-}
-
 const KisPaintInformation& KisStabilizedEventsSampler::iterator::dereference() const
 {
     const int k = qFloor(m_alpha * m_index);