style(ng/animate.js): remove a newline

Closes #15309

src/ng/animate.js

@@ -252,7 +252,6 @@ var $AnimateProvider = ['$provide', /** @this */ function($provide) {
         var reservedRegex = new RegExp('(\\s+|\\/)' + NG_ANIMATE_CLASSNAME + '(\\s+|\\/)');
         if (reservedRegex.test(this.$$classNameFilter.toString())) {
           throw $animateMinErr('nongcls','$animateProvider.classNameFilter(regex) prohibits accepting a regex value which matches/contains the "{0}" CSS class.', NG_ANIMATE_CLASSNAME);
-
         }
       }
     }