A personal favorite example of useless information is the directions ... include instructions like "make a hard left where the Methodist church used to be"!
This must be a common occurrence. While cycling through London (England) I asked for directions, and was instructed to turn where the such-and-such pub used to be!
When I responded that I was a visitor to London, and would not be able to recognize the landmark, my helper looked at me quizzically, and repeated the instructions.
Given that we both spoke English, maybe the story illustrates that separating cultural from linguistic differences can be challenging!