removed some extraneous code

src/ascii_manipulation.rs

@@ -69,8 +69,4 @@ pub fn to_braille_ascii(mut image: DynamicImage, threshold: u8) -> Vec<Vec<Ascii
         str = Vec::new();
     }
     out
-}
-pub fn to_box_ascii(image: DynamicImage) -> Vec<Vec<Ascii>> {
-    //todo: this one
-    vec![vec![Ascii::new(0, 0, 0,0 )]]
-}
+}