Remove coercion method use.

delay.js

@@ -1,5 +1,3 @@
-import toNumber from './toNumber.js'
-
 /**
  * Invokes `func` after `wait` milliseconds. Any additional arguments are
  * provided to `func` when it's invoked.
@@ -19,7 +17,7 @@ function delay(func, wait, ...args) {
   if (typeof func != 'function') {
     throw new TypeError('Expected a function')
   }
-  return setTimeout(func, toNumber(wait) || 0, ...args)
+  return setTimeout(func, +wait || 0, ...args)
 }
 
 export default delay