fix(angular): unexport some es2017 js

Author: manucorporat

core/src/index.ts

@@ -1,9 +1,7 @@
 // Util functions
 export * from './utils/helpers';
 export * from './utils/haptic';
-export * from './utils/overlays';
 export * from './utils/framework-delegate';
 export * from './utils/platform';
-export * from './utils/transition';
 export * from './utils/config';