If you want to get rid of all the errors related to AssemblyInfo.cs and as a matter of fact any other autogenerate file use the autogenerated tag at the beginning of the file like so:
How to format the file header
SA1633 calls for a valid header XML. If you are curious how to format the required file header here is an example:
// <copyright file="Program.cs" company="My Company">
// Copyright (c) Tobias Hertkorn. All rights reserved.