Hi Idharam,
Thank you for posting your question in Microsoft Community.
I understand that you want to remove uninstalled apps history in the "Your Apps" option from "Windows store". Correct me if I am wrong.
It is by design and it is not possible to remove the app history. It is used for your reference, the apps that you have uninstalled, so that you can install them in the future, if you require it.
I hope the above information helps you.