v0.9.1b: addressed/removed numerous TODO/FIXME lines & some unused code

SPD-classes/src/main/java/com/watabou/noosa/Tilemap.java

@@ -214,36 +214,6 @@ public class Tilemap extends Visual {
 			topLeftUpdating = -1;
 			updating.setEmpty();
 		}
-		
-		//FIXME temporarily disabled this optimization as it is suspected to cause crashes
-		/*Camera c = Camera.main;
-		//we treat the position of the tilemap as (0,0) here
-		camX = (int)(c.scroll.x/cellW - x/cellW);
-		camY = (int)(c.scroll.y/cellH - y/cellH);
-		camW = (int)Math.ceil(c.width/cellW);
-		camH = (int)Math.ceil(c.height/cellH);
-
-		if (camX >= mapWidth
-				|| camY >= mapHeight
-				|| camW + camW <= 0
-				|| camH + camH <= 0)
-			return;
-
-		//determines the top-left visible tile, the bottom-right one, and the buffer length
-		//between them, this culls a good number of none-visible tiles while keeping to 1 draw
-		topLeft = Math.max(camX, 0)
-				+ Math.max(camY*mapWidth, 0);
-
-		bottomRight = Math.min(camX+camW, mapWidth-1)
-				+ Math.min((camY+camH)*mapWidth, (mapHeight-1)*mapWidth);
-
-		if (topLeft >= size || bottomRight < 0)
-			length = 0;
-		else
-			length = bottomRight - topLeft + 1;
-
-		if (length <= 0)
-			return;*/
 
 		NoosaScript script = script();