I was reviewing the "Low Quality Post" queue and came across an answer from a new user that (a) criticized a comment on the post and (b) gave a link to a reasonably good explanation of the answer. The post already had a comment that it is inappropriate to criticize posts (and also inappropriate to use an answer to comment). The user had too little rep to actually comment.
My question: Is it reasonable for me to edit the post by just deleting the inappropriate critical comments of another user? I realize that the best case scenario is for the user who made the comment to delete it themselves. The reason I ask is that I hesitate to delete the post (since it contains some good/useful/relevant material), but I feel like it shouldn't be left "as is." In this case, I skipped (since I didn't know what to do) but figured I ask for future reference.