removing unnecessary comments

src/main.rs

@@ -15,7 +15,7 @@ fn main() {
     let path = Path::new(r"./image.png");
     let file = File::create(path).unwrap();
     let ref mut w = BufWriter::new(file);
-    let mut encoder = png::Encoder::new(w, 200, 200); // Width is 2 pixels and height is 1.
+    let mut encoder = png::Encoder::new(w, 200, 200);
     encoder.set_color(png::ColorType::Rgba);
     encoder.set_depth(png::BitDepth::Eight);
     // Adding text chunks to the header