Remove coercion method use.

.internal/createRound.js

@@ -1,7 +1,3 @@
-import toInteger from '../toInteger.js'
-import toNumber from '../toNumber.js'
-import toString from '../toString.js'
-
 /**
  * Creates a function like `round`.
  *
@@ -12,15 +8,14 @@ import toString from '../toString.js'
 function createRound(methodName) {
   const func = Math[methodName]
   return (number, precision) => {
-    number = toNumber(number)
-    precision = precision == null ? 0 : Math.min(toInteger(precision), 292)
+    precision = precision == null ? 0 : Math.min(precision, 292)
     if (precision) {
       // Shift with exponential notation to avoid floating-point issues.
       // See [MDN](https://mdn.io/round#Examples) for more details.
-      let pair = `${ toString(number) }e`.split('e')
+      let pair = `${ number }e`.split('e')
       const value = func(`${ pair[0] }e${ +pair[1] + precision }`)
 
-      pair = `${ toString(value) }e`.split('e')
+      pair = `${ value }e`.split('e')
       return +`${ pair[0] }e${ +pair[1] - precision }`
     }
     return func(number)