[Janitorial] Remove unused function

resetMaximize is done in changeMaximize since ages

client.h

@@ -741,7 +741,6 @@ private:
     void positionGeometryTip();
     void grabButton(int mod);
     void ungrabButton(int mod);
-    void resetMaximize();
     void resizeDecoration(const QSize& s);
 
     void pingWindow();

geometry.cpp

@@ -2276,24 +2276,6 @@ void Client::changeMaximize(bool vertical, bool horizontal, bool adjust)
     updateWindowRules(Rules::MaximizeVert|Rules::MaximizeHoriz|Rules::Position|Rules::Size);
 }
 
-void Client::resetMaximize()
-{
-    if (max_mode == MaximizeRestore)
-        return;
-    max_mode = MaximizeRestore;
-    Notify::raise(Notify::UnMaximize);
-    info->setState(0, NET::Max);
-    updateAllowedActions();
-    if (decoration != NULL)
-        decoration->borders(border_left, border_right, border_top, border_bottom);
-    if (isShade())
-        setGeometry(QRect(pos(), sizeForClientSize(clientSize())), ForceGeometrySet);
-    else
-        setGeometry(geometry(), ForceGeometrySet);
-    if (decoration != NULL)
-        decoration->maximizeChange();
-}
-
 bool Client::isFullScreenable(bool fullscreen_hack) const
 {
     if (!rules()->checkFullScreen(true))