This question already has an answer here:
Sometimes I see questions with unnecessary "Hello to you from Username!", which obviously doesn't contribute or help understand the problem in any way. But I'm not sure about cases where people say "Sorry for my bad English" and such. These kind of warn the reader that the OP might have used wrong terms without knowing, so it sort of helps to guess what the problem is, if it's not clear enough.
Should these be removed?