Remove createCompounder.

.internal/createCompounder.js

@@ -1,19 +0,0 @@
-import words from '../words.js'
-
-/** Used to match apostrophes. */
-const reApos = /['\u2019]/g
-
-/**
- * Creates a function like `camelCase`.
- *
- * @private
- * @param {Function} callback The function to combine each word.
- * @returns {Function} Returns the new compounder function.
- */
-function createCompounder(callback) {
-  return (string) => (
-    words(`${ string }`.replace(reApos, '')).reduce(callback, '')
-  )
-}
-
-export default createCompounder