Deletes a file from the disk
[C++]
static int FileDelete(
   const char* file_text
);
File_text is the name of the file to delete.
Zero if the function has been called successfully; non-zero
            if the function could not be called.
            See Error codes for a list
            of return values.
See the Microsoft Excel on-line Help for full details about
            this function.
Header: xlfuncs.h