Removing anything breaks existing source code that has been tested to work. After all just because something may lead to issues it doesn't mean it will always l

Removing anything breaks existing source code that has been tested to work. After all just because something may lead to issues it doesn't mean it will always lead to issues. Also in many systems the C library is linked dynamically and shared among all programs so even though a program is compiled it still relies on the underlying system to provide the function. Finally i'm certain that if a C standard removes something, it'll be treated as the equivalent to that standard not existing. C programmers are already a conservative bunch without such changes.