Extend models functionality with old decorator methods. Use Repository model

app/mailers/emails/notes.rb

@@ -3,7 +3,6 @@ module Emails
     def note_commit_email(recipient_id, note_id)
       @note = Note.find(note_id)
       @commit = @note.noteable
-      @commit = CommitDecorator.decorate(@commit)
       @project = @note.project
       mail(to: recipient(recipient_id), subject: subject("note for commit #{@commit.short_id}", @commit.title))
     end