Drop `username` requirement from documentation

The `username` setting is no longer used as documented in the
`upgrade.md` already. So we drop it here as well.

Change-Id: I7d04901472d89885d10932a9bffdbabdb7ea0bad
1 file changed
tree: 4368806b668762f6c481c7de1bcb7d2726709fc4
  1. .settings/
  2. src/
  3. .gitignore
  4. BUILD
  5. LICENSE