remove obvious var type
@@ -787,7 +787,7 @@ impl<'comments> Formatter<'comments> {
let minus_ch = '-';
let underscore_ch = '_';
let len = value.len();
- let mut new_value: String = String::new();
+ let mut new_value = String::new();
let mut j = 0;
for (i, ch) in value.chars().rev().enumerate() {
if ch == '_' {
