Remove guard params.

words.js

@@ -10,7 +10,6 @@ import unicodeWords from './.internal/unicodeWords.js'
  * @category String
  * @param {string} [string=''] The string to inspect.
  * @param {RegExp|string} [pattern] The pattern to match words.
- * @param- {Object} [guard] Enables use as an iteratee for methods like `map`.
  * @returns {Array} Returns the words of `string`.
  * @example
  *
@@ -20,10 +19,8 @@ import unicodeWords from './.internal/unicodeWords.js'
  * words('fred, barney, & pebbles', /[^, ]+/g)
  * // => ['fred', 'barney', '&', 'pebbles']
  */
-function words(string, pattern, guard) {
+function words(string, pattern) {
   string = toString(string)
-  pattern = guard ? undefined : pattern
-
   if (pattern === undefined) {
     return hasUnicodeWord(string) ? unicodeWords(string) : asciiWords(string)
   }