chore(perf): Remove the obsolete karma-perf-conf.js
chore(perf): Remove the obsolete karma-perf-conf.js

ronlobo/angular.dart,winstonewert/angular.dart,winstonewert/angular.dart,rkirov/angular.dart,SibuStephen/angular.dart,ronlobo/angular.dart,trinarytree/angular.dart,trinarytree/angular.dart,SibuStephen/angular.dart,giovannicandido/angular.dart,giovannicandido/angular.dart,hitesh97/angular.dart,giovannicandido/angular.dart,trinarytree/angular.dart,winstonewert/angular.dart,hitesh97/angular.dart,SibuStephen/angular.dart,ronlobo/angular.dart,rkirov/angular.dart,ronlobo/angular.dart,trinarytree/angular.dart,winstonewert/angular.dart,rkirov/angular.dart,rkirov/angular.dart,SibuStephen/angular.dart,hitesh97/angular.dart,hitesh97/angular.dart