In some questions, users write some greeting sentences like
thank you for your attention. or
any advice is appreciated. or other sentences like these by which the users want to express that they are thankful to the people who read and give advices on their questions; or they appreciate any comments or solutions and answers which are posted to their questions.
Most of the times, I edit such sentences because I do not find them really helpful, relevant or on-topic to the questions' text. But, should they really be edited or it is good to have them in the body of the questions?