Hmm, perhaps not the current present, but it is exceptionally unlikely that by erasing Darwin from existence, you'd similarly wipe out the modern evolution concept from both ever existing or ever being created. Besides, there's far worse people to wipe from existence... Like Edison!
Oh, Srom, you so silly sometimes. The foundations of evolutionary ideas were pre-Socrates era Greek philosophers, so yeah, I don't think wiping Darwin from existence would prevent the modern idea of evolution from existing; it would likely just be attributed to someone else.