(Fixup) Revert "fix(ng.$animate): forward cancel to animation runner"

This reverts commit 181efa9, because it's incorrect

Author: Narretz

src/ng/animate.js

@@ -416,8 +416,8 @@ var $AnimateProvider = ['$provide', /** @this */ function($provide) {
        * @param {Promise} animationPromise The animation promise that is returned when an animation is started.
        */
       cancel: function(runner) {
-        if (runner.cancel) {
-          runner.cancel();
+        if (runner.end) {
+          runner.end();
         }
       },
 

test/ng/animateSpec.js

@@ -530,33 +530,6 @@ describe('$animate', function() {
     }));
 
 
-    it('should reject the promise when the animation is cancelled', inject(function(log, $animate, $$rAF, $rootScope) {
-      element = jqLite('<p class="test2">test</p>');
-
-      var addRunner = $animate.addClass(element, 'test1');
-      addRunner.then(function() {
-        log('addClass(test1)success');
-      }).catch(function() {
-        log('addClass(test1)error');
-      });
-
-
-      var removeRunner = $animate.removeClass(element, 'test2');
-      removeRunner.then(function() {
-        log('removeClass(test2)success');
-      }).catch(function() {
-        log('removeClass(test2)error');
-      });
-
-      $rootScope.$digest();
-      expect(log).toEqual([]);
-      $animate.cancel(addRunner);
-      $animate.cancel(removeRunner);
-      $rootScope.$digest();
-      expect(log.toArray()).toEqual(['addClass(test1)error', 'removeClass(test2)error']);
-    }));
-
-
     it('should defer class manipulation until end of digest for SVG', inject(function($rootScope, $animate) {
       if (!window.SVGElement) return;
       setupClassManipulationSpies();