Remove unused macro rule

Author: Xiphoseer

lexical-parse-float/src/slow.rs

@@ -295,19 +295,6 @@ macro_rules! add_temporary {
         $result.data.add_small($value).unwrap();
     };
 
-    // # Safety
-    //
-    // Safe is `counter <= step`, or smaller than the table size.
-    ($format:ident, $result:ident, $counter:ident, $value:ident) => {
-        if $counter != 0 {
-            // SAFETY: safe, since `counter <= step`, or smaller than the table size.
-            let small_power = unsafe { f64::int_pow_fast_path($counter, $format.radix()) };
-            add_temporary!(@mul $result, small_power as Limb, $value);
-            $counter = 0;
-            $value = 0;
-        }
-    };
-
     // Add a temporary where we won't read the counter results internally.
     //
     // # Safety