Yeah, that's dumb. Making them unavailable is not, in any way shape or form, going to eliminate racism. I can see maybe adding a disclaimer to the front of the book warning that they're a product of their time and some images don't meet current standards, but... you're never helping things by making things unavailable. And it won't make anyone a racist to read 'em. I've got copies of The Bible (and the Koran and the Book of Mormon and The Satanic Bible and several Buddhist works, etc.) and I'm an atheist who thinks all that stuff's ridiculous. But, it's still something to study in order to understand other people. Likewise, I'm anti-racist and not right-wing but I have a copy of Mein Kampf and even The Turner Diaries, because I want to know my enemy. To know what you're fighting you have to get nasty and read what they read, watch what they watch, just like if you're planning to hunt deer you've got to know what they eat, where they get it, gotta know where they sleep, how they live, how they mate... otherwise you aren't hunting, you're just walking in the woods.
So, nope, not for banning Dr. Seuss. Putting a disclaimer, sure. Maybe binding them all in one volume as "The Controversial Seuss" so they're not scattered out there for people who'd rather keep them away from their kids, okay. But ceasing publication? Nah.
I see what's offensive about certain movies. Song of the South, for instance. The B'rer Rabbit cartoon sections are some of Disney's best work, and Uncle Remus is certainly a lovable and positive character... but the overall image of slavery as a happy fun time for everybody is deeply offensive. I can see maybe not wanting your kid to see it. Making it unavailable, though? Nah.
When they put the old Warner Brothers cartoons out, there were some "problematic" elements. They still released them, but with a warning and a prologue discussing how they were products of their time. That was appropriate. But, they're available. Hell, even craaaaaazy-offensive cartoons like "Scrub Me Mama With A Boogie Beat" are still out there, and that one's so fucking bigoty-ass that even our resident Nazi-defending piece of shit anti-Antifa doesn't-even-realize-he's-a-bigot on this board would probably be shocked by it. But ya gotta see it so ya know that, yeah, at one time that shit was considered not only acceptable but "funny." Without it, you just play into the hands of people who wanna say racism was "never that bad." Find a certain Bugs Bunny cartoon made during WWII -- Bugs Bunny Nips the Nips. WOW, will that thing hip you to some racist shit that was going on. I mean, yeah, Japan was the enemy at the time, but Bugs handing 'em picnic baskets full of dynamite and saying, "Here ya go, slant-eyes!" is really fucking hard to take. But, it happened. Not letting people see that just denies part of history. It'd be wrong to celebrate it, but stuffing it in a closet and locking it up is no good, either.
I know people who won't read H. P. Lovecraft because he was a racist. I'm all about some Lovecraft... although the man, himself, was a piece of shit. No denying it. Not excusing it. Is "Shadow Over Innsmouth" still a great story? Absolutely it is. Was Lovecraft himself a scumbag? Absolutely he was. You can acknowledge both things at the same time. It's not that complicated. Roman Polanski is a pedophile scumbag who probably should be shot in the face. I won't mind at all if someone does. Repulsion and Rosemary's Baby and The Tenant are still masterpieces.
Dr. Seuss did some reaaaaaally racist drawings during WWII. It wasn't just "people weren't as enlightened back then as they are now" -- it was just racist. But, he acknowledged that he did some bad things that were wrong. That's important to keep in mind. He also did some things that were against racism. "The Sneeches" is an anti-racist story. So, ya don't dismiss somebody because they're only 80% enlightened and still 20% fucked up. Ya try to focus on the good and help them work on what's still wrong. Otherwise you just end up with more enemies.
Anyway, yeah, never down with banning books.