add comments

src/misc.rs

@@ -22,29 +22,6 @@ where
     output
 }
 
-pub fn offsets(i: usize, j: usize, range: usize) -> Vec<(usize, usize)> {
-    let mut output = Vec::new();
-    for i_o in [-(range as i16), 0, range as i16] {
-        let new_i = i as i16 + i_o;
-        if 0 > new_i {
-            continue;
-        }
-
-        for j_o in [-(range as i16), 0, range as i16] {
-            if (i_o, j_o) == (0, 0) {
-                continue;
-            }
-            let new_j = j as i16 + j_o;
-            if 0 > new_j {
-                continue;
-            }
-            output.push((new_i as usize, new_j as usize));
-        }
-    }
-
-    output
-}
-
 #[cfg(test)]
 mod test {
     use super::*;