Remove max area parameter from Region::get_rects()

It was unused and added complexity and bugs to the code. So let's
remove it rather than trying to clean up a function no one needed.

common/rfb/Region.cxx

 }
 
 bool rfb::Region::get_rects(std::vector<Rect>* rects,
-                            bool left2right, bool topdown, int maxArea) const
+                            bool left2right, bool topdown) const
 {
   int nRects = xrgn->numRects;
   int xInc = left2right ? 1 : -1;
       i = firstInNextBand - yInc;
 
     while (nRectsInBand > 0) {
-      int y = xrgn->rects[i].y1;
-      int h = maxArea / (xrgn->rects[i].x2 - xrgn->rects[i].x1);
-      if (!h) h = xrgn->rects[i].y2 - y;
-      do {
-        if (h > xrgn->rects[i].y2 - y)
-          h = xrgn->rects[i].y2 - y;
-        Rect r(xrgn->rects[i].x1, y, xrgn->rects[i].x2, y+h);
-        rects->push_back(r);
-        y += h;
-      } while (y < xrgn->rects[i].y2);
+      Rect r(xrgn->rects[i].x1, xrgn->rects[i].y1,
+             xrgn->rects[i].x2, xrgn->rects[i].y2);
+      rects->push_back(r);
       i += xInc;
       nRectsInBand--;
     }

common/rfb/Region.h

     bool is_empty() const { return numRects() == 0; }
 
     bool get_rects(std::vector<Rect>* rects, bool left2right=true,
-                   bool topdown=true, int maxArea=0) const;
+                   bool topdown=true) const;
     Rect get_bounding_rect() const;
 
     void debug_print(const char *prefix) const;