Remove unused variables

Author: sharkwouter

include/Board.h

@@ -184,7 +184,6 @@ class Board {
 	bool defeated;
 	bool finished;
 
-	int rows, cols;
 	int tank_x, tank_y, origin_x, origin_y;
 	int level;
 

src/Board.cpp

@@ -4,7 +4,7 @@
 
 #include "utils.h"
 
-Board::Board(Draw * draw, Textures * textures, Sound * sound) : help_blocks(false), rows(ROWS), cols(COLUMNS), tank_x(0), tank_y(0), level(0), draw(draw), textures(textures), sound(sound) {
+Board::Board(Draw * draw, Textures * textures, Sound * sound) : help_blocks(false), tank_x(0), tank_y(0), level(0), draw(draw), textures(textures), sound(sound) {
 	CreateArray();
 	LoadLevel();	
 }