I don't think you can remove the "app-data sync" from avast in any way but you should do more research on this matter because I'm not an expert and I could be wrong. I had the same problem when I was at work and I didn't know how to remove that message. My friend suggested I look for websites like https://www.apkdojo.com/shareit or other, in order to install apps without avast being able to interfere. It helped me a lot and I didn't have this type of problem occur ever since.
Yes Its do some time but after few days its become m=normal and back its orginal condition. and for more info visit this site: App Development
You've got it now. That's really nice. インドの医療ビザ