Remove _getFuncName.

_getFuncName.js

@@ -1,28 +0,0 @@
-import realNames from './_realNames.js';
-
-/** Used to check objects for own properties. */
-const hasOwnProperty = Object.prototype.hasOwnProperty;
-
-/**
- * Gets the name of `func`.
- *
- * @private
- * @param {Function} func The function to query.
- * @returns {string} Returns the function name.
- */
-function getFuncName(func) {
-  const result = `${ func.name }`;
-  const array = realNames[result];
-  let length = hasOwnProperty.call(realNames, result) ? array.length : 0;
-
-  while (length--) {
-    const data = array[length];
-    const otherFunc = data.func;
-    if (otherFunc == null || otherFunc == func) {
-      return data.name;
-    }
-  }
-  return result;
-}
-
-export default getFuncName;