Visual Studio 2013 Vertical Brace Lines

Works for VS2017, VS2019 and VS2022

Tools > Options > Text Editor > General > Uncheck Show Structure Guide Lines

Yes, I hate it and was going to ask the same question, but I have figured it out. You must have ProductivityPowerTools installed too. Go to Tools->Options->Productivity Power Tools->Other Extensions and there is an option group called Structure visualizer options. In there is a checkbox for Show code structure in editor. Turn this off, and job done!

For Visual Studio 2017 look at

Tools -> Options -> Text Editor -> [lang] -> Advanced -> Block Structure Guides

[x] Show guides for declaration level constructs
[x] Show guides for code level constructs