Most developers I know are pretty anal about the formatting of their source code. I used to think I was pretty obsessive compulsive about it, but then I joined Microsoft and faced a whole new level of OCD (Obsessive Compulsive Disorder). For example, many require all using statements to be sorted and unused statements to be removed, which was something I never cared much about in the past.
There’s no shortcut that I know of for removing unused using statements. Simply right click in the editor and select Organize Usings > Remove and Sort in the context menu.
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