Function builtin_unlink 

fn builtin_unlink(
    args: &[RValue],
    named: &[(String, RValue)],
    context: &BuiltinContext<'_>,
) -> Result<RValue, RError>

Delete files or directories.

@param x character scalar: path to remove @param recursive logical: if TRUE, remove directories recursively (default FALSE) @return integer scalar: 0 on success, 1 on failure