remove history len debug text

src/main.zig

@@ -428,8 +428,6 @@ pub fn main() !void {
             },
         });
 
-        _ = canvas.printText(.{ 0, 0 }, "History len: {}", .{history.items.len}, .{});
-
         switch (window_size[1]) {
             0...144 => if (card_tilemap_small == null) {
                 card_tilemap_small = try assets.loadSmallCards(gpa.allocator());