Don't use `void` as an argument type

Reason

It's verbose and only needed where C compatibility matters.

Example

void f(void);   // bad

void g();       // better

Note

Even Dennis Ritchie deemed void f(void) an abomination. You can make an argument for that abomination in C when function prototypes were rare so that banning:

int f();
f(1, 2, "weird but valid C89");   // hope that f() is defined int f(a, b, c) char* c; { /* ... */ }

would have caused major problems, but not in the 21st century and in C++.