refactor(animate): remove duplicate line

Author: chrisirhc

test/ngAnimate/animateSpec.js

@@ -1303,8 +1303,6 @@ describe("ngAnimate", function() {
         it('should only append active to the newly append CSS className values',
           inject(function($animate, $rootScope, $sniffer, $rootElement, $timeout) {
 
-          ss.addRule('.ng-enter', '-webkit-transition:9s linear all;' +
-                                          'transition:9s linear all;');
           ss.addRule('.ng-enter', '-webkit-transition:9s linear all;' +
                                           'transition:9s linear all;');