See, now this I disagree with. Unless you're trying to strip out mechanics, which of course can get problematic. But stripping out stuff like equipment, races or classes? That's ridiculously easy.
DM: No.
See how easy that was? That's all it takes.
Now, if your sensibilities are so sensitive that even a picture in a game book that you probably only open up once in a blue moon (at least, that's how I played 3e and 4e) sets your teeth to grinding, well, I can see the point. But, honestly, catering to people whose tastes are that ingrained is poor business practice. Catering to that crowd is no different than TSR catering to MADD and removing Demons and devils.
Someone who draws a line in the sand over a couple of pictures in a game book is just going to find something else to bitch about every time you try to appease them. You're better off by far to just write them off entirely. Because if you try to make your game based on people who hate everything you do, you wind up with a game that everyone hates.