I'm with Teslacoil in this; it's extremely improbable that it's going to cause any real issues, and in the worst case, you need to say "sorry" - and even this seems quite remote. We tend to be totally hysteric about copyright infringements today. Sure, don't torrent a movie if you don't want to take the miniscule risk of totally out-of-place consequences. But this is very different.
Sometimes, you need to think about:
1) your moral,
2) practical life
instead of going too theoretical about what could happen in a totally fucked-up world.
This being said, if you do want to get all theoretical, you are doing it very very wrong already:
It's clear from your text that you are under an assumption/impression that the manufacturers need to add those "do not redistribute" clauses, and these clauses are your problem. This is not the case, not at all. The "do not redistribute" is the default, almost everywhere, by law, through international copyright law harmonization agreements. The text is mostly a reminder (and may be required in some jurisdictions).
On the other hand, there are countless of exceptions which allows you to do that. The lack of "do not redistribute" clause is not one of them.
If you are working under this assumption, you have possibly already included stuff that lacked these babbles and thought it was OK. Guess what? It wasn't OK, from the purely law's viewpoint. So if this is the case and you have already done it, it's equally OK to keep doing this, even when there is this "babble", since it doesn't change anything. Be practical, moral and sensible, and everything will be well. No one has been ever sued for distributing a simple 3D model of a 0603 resistor, and I'm ready to eat my hat if this happens to you.
TLDR: just do it.
As a generic side note, our mechanical designer doesn't like 100-megabyte models of complex PCBs that include detailed models of every 0402 resistor and every via. It eats up all his CPU, for no real reason whatsoever.
Sure, the nice step models look so fancy and great, but I have downgraded and went back to simplified primitive 3D shapes, which look good enough if not totally fancy-pancy, and are way more practical. Also, there's a chance to draw them correctly: the step models off the 'net are most likely done wrong (for example, using "typical" measurements even though you should be using maximum values to guarantee clearance!)
The best "render" ever will be the actual photograph of the finished product.