I've seen all of these before. Maybe it's because some schools encourage filling pages, or because of simple lack of practice, or because it is honestly meant.

"Obviously", "It is common knowledge", "Trivially", etc. -> condescending, or you're too lazy to look up references. Easy to fix: just delete!

"We obtain the value by using the formula from the book" -> sounds like you don't know what you're doing. Call the equation or principle by its name instead! Also, in case you really don't know what you're doing -- read up on it!

"The function xyz of the software package we did not program returns us a value, called 'enthalpy', which we can use to" -> again, sounds like you don't know what you're doing. Talk about your tools once, in the Methods section, and never again after. But do make sure you do know what you're doing.

"However, [17] failed to do xyz" -> never talk bad about a fellow researcher, it makes you look like an ass. Talk about what they did instead, then identify a knowledge gap that you address. Whatever wasn't addressed before is your playing field!

"I call this the 'John Smith' effect, after myself"'. Just don't.

Happy writing!