refactor/polish ~ fix cargo clippy complaints (unneeded _)

src/printf/tokenize/num_format/formatters/float_common.rs

@@ -160,7 +160,7 @@ fn _round_str_from(in_str: &str, position: usize) -> (String, bool) {
             '9' => {
                 rev.push('0');
             }
-            e @ _ => {
+            e => {
                 rev.push(((e as u8) + 1) as char);
                 finished_in_dec = true;
                 break;

src/printf/tokenize/unescaped_text.rs

@@ -120,7 +120,7 @@ impl UnescapedText {
                     byte_vec.push(ch as u8);
                 }
             }
-            e @ _ => {
+            e => {
                 // only for hex and octal
                 // is byte encoding specified.
                 // otherwise, why not leave the door open