Remove unused code into GUI

src/Gui/CADNavigationStyle.cpp

@@ -65,18 +65,9 @@ const char* CADNavigationStyle::mouseButtons(ViewerMode mode)
 
 SbBool CADNavigationStyle::processSoEvent(const SoEvent * const ev)
 {
-#if 0
-    // Events when in "ready-to-seek" mode are ignored, except those
-    // which influence the seek mode itself -- these are handled further
-    // up the inheritance hierarchy.
-    if (this->isSeekMode()) {
-        return inherited::processSoEvent(ev);
-    }
-#else
     // Switch off viewing mode (Bug #0000911)
     if (!this->isSeekMode() && !this->isAnimating() && this->isViewing())
         this->setViewing(false); // by default disable viewing mode to render the scene
-#endif
 
     const SoType type(ev->getTypeId());