removed 2 lines that are redundant anyways (please verify)

[Dorfeuheinz]

No description provided.

[josevalim]

Hi @Dorfeuheinz! I prefer to keep it as is because, if we later change normalize_layout to behave differently, then this code won't update it in place. In other words, you are removing unnecessary logic but at the same it means the caller needs to be more aware of what the callee does. :)