Remove completed todos

Library/Homebrew/.rubocop_todo.yml

@@ -1,6 +1,5 @@
 Style/Documentation:
   Exclude:
-    - "compat/**/*.rb"
     - "extend/**/*.rb"
     - "cmd/**/*.rb"
     - "dev-cmd/**/*.rb"
@@ -8,17 +7,14 @@ Style/Documentation:
     - "cask/macos.rb"
     - "cli/args.rb"
     - "cli/parser.rb"
-    - "default_prefix.rb"
     - "global.rb"
     - "keg_relocate.rb"
     - "os/mac/keg.rb"
     - "reinstall.rb"
     - "software_spec.rb"
-    - "upgrade.rb"
     - "utils.rb"
     - "utils/fork.rb"
     - "utils/gems.rb"
     - "utils/git_repository.rb"
     - "utils/popen.rb"
     - "utils/shell.rb"
-    - "version.rb"