uucore/format: remove Display impl

of ExtendedBigDecimal

Author: cakebaker

src/uucore/src/lib/features/format/extendedbigdecimal.rs

@@ -21,7 +21,6 @@
 //! assert_eq!(summand1 + summand2, ExtendedBigDecimal::Infinity);
 //! ```
 use std::cmp::Ordering;
-use std::fmt::Display;
 use std::ops::Add;
 use std::ops::Neg;
 
@@ -110,25 +109,6 @@ impl ExtendedBigDecimal {
     }
 }
 
-impl Display for ExtendedBigDecimal {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        match self {
-            Self::BigDecimal(x) => {
-                let (n, p) = x.as_bigint_and_exponent();
-                match p {
-                    0 => Self::BigDecimal(BigDecimal::new(n * 10, 1)).fmt(f),
-                    _ => x.fmt(f),
-                }
-            }
-            Self::Infinity => f32::INFINITY.fmt(f),
-            Self::MinusInfinity => f32::NEG_INFINITY.fmt(f),
-            Self::MinusZero => (-0.0f32).fmt(f),
-            Self::Nan => "nan".fmt(f),
-            Self::MinusNan => "-nan".fmt(f),
-        }
-    }
-}
-
 impl Zero for ExtendedBigDecimal {
     fn zero() -> Self {
         Self::BigDecimal(BigDecimal::zero())
@@ -281,16 +261,4 @@ mod tests {
             _ => unreachable!(),
         }
     }
-
-    #[test]
-    fn test_display() {
-        assert_eq!(
-            format!("{}", ExtendedBigDecimal::BigDecimal(BigDecimal::zero())),
-            "0.0"
-        );
-        assert_eq!(format!("{}", ExtendedBigDecimal::Infinity), "inf");
-        assert_eq!(format!("{}", ExtendedBigDecimal::MinusInfinity), "-inf");
-        assert_eq!(format!("{}", ExtendedBigDecimal::Nan), "nan");
-        assert_eq!(format!("{}", ExtendedBigDecimal::MinusZero), "-0");
-    }
 }