You cannot take alignments out of D&D… PERIOD.
I've seen, read, and participated in the whole I hate/love alignments threads, but there seems to be one factor I haven’t seen discussing alignments… they are a VERY strong meme in and of themselves. Alignments have become part of geek and internet subculture, there are endless thread postings, T-shirts, demotivational images and posters.
Even if you were (wrongly) to remove alignments from D&D they would still be talked about, referred to, etc.
In short, like it or not, alignments are, have been, and always will be part of D&D…