fix(pkg): xbrowser node removal

Author: cdaringe

src/index.js

@@ -26,7 +26,7 @@ var bcsrf = {
 
     // remove injected nodes
     toArray(document.querySelectorAll('[name="' + this._headerName + '"]'))
-      .forEach(function (node) { node.remove() })
+    .forEach(function (node) { node.parentNode.removeChild(node) })
 
     // restore wrapped xhr
     XMLHttpRequest.prototype.send = this._xhrSend

test/index.js

@@ -36,6 +36,9 @@ tape('inject', function (t) {
     if (handled) return // concurrent xhrs may creep in here. just sniff one
     handled = true
     t.equal(this.status, 0, 'intercepted xhr')
+
+    // teardown
+    stub.restore()
     this.abort()
     bcsrf.deinject()
     t.pass('teardown')