Remove polyfill for Function.prototype.bind

lib/polyfills/Function.prototype.bind.js

@@ -1,20 +0,0 @@
-if (!Function.prototype.bind) {
-  Function.prototype.bind = function(oThis) {
-    if (typeof this !== "function") {
-      // closest thing possible to the ECMAScript 5 internal IsCallable function
-      throw new TypeError("Function.prototype.bind - what is trying to be bound is not callable")
-    }
-
-    var aArgs = Array.prototype.slice.call(arguments, 1)
-    var that = this
-    var Fnoop = function() {}
-    var fBound = function() {
-      return that.apply(this instanceof Fnoop && oThis ? this : oThis, aArgs.concat(Array.prototype.slice.call(arguments)))
-    }
-
-    Fnoop.prototype = this.prototype
-    fBound.prototype = new Fnoop()
-
-    return fBound
-  }
-}

lib/proto/attach-form.js

@@ -1,5 +1,3 @@
-require("../polyfills/Function.prototype.bind")
-
 var on = require("../events/on")
 var clone = require("../clone")
 

lib/proto/attach-link.js

@@ -1,5 +1,3 @@
-require("../polyfills/Function.prototype.bind")
-
 var on = require("../events/on")
 var clone = require("../clone")