At least for Word 97 and Word 2000 (for Windows), there is in fact a
"Suppress endnotes" option available in the Page Setup dialog box. In
other words: no macro seems to be needed for these versions, either,
unless there is some bug in certain service releases that makes the
user interface unreliable in this respect.
Of course, in a document with many sections, the macro might still be
convenient, since it sets all the necessary options in one step.