A custom TV might be another option.I think this is the only way I really like – but in a case of liking some things second best. ;-)
I think my first try would be a tiny bit of JS code injected with $modx->regClientStartupScript() in OnDocFormPrerender to do a "display:none" on the time element(s).For the time being this would be a nice solution. Cool!
If I have some extra time (pun intended) someday, I'll play with it as an extra called HideTime.

That's a perfectly reasonable feature request - it should be part of the TV form.1.) Glad you agree.
That said, there are already at least three ways to do it (JS, plugin, and custom TV), so it probably won't be a very high priority job.

[[*dateTest:strtotime:date=`%e %b %Y`]]