There may be a point of removing the essay, but what will they replace with?
Ten years ago, when I seeked for university admission in Korea, a country which has extremely competitive university admission procedures, we had essay exams. They give you approximately 500~1000 words of whatever text (it can be some literature, news article, textbook text, or whatsoever), followed by a short question which has to be answered in a 1,600 character (around 500 wordsessay. With something like 2 hours time limit.
With only two hours, students had only something like 10 minutes to read the text, 5 minutes to think, 10 minutes to plan the structure of the essay, and about an hour to write 500 words on a piece of paper, including making correceionts. In other words, if you cannot understand the text and figure out what to write within 20 or so minutes, you are doomed.
Back then, and for many more years, I thought it was unfair. I wanted to do engineering, but the essay looked ridiculous. However, after ten years, I found that preparing for the essay exam had greatly enhanced my writing skills (which I find really important - sometimes more important than math or physics), and it forced me to read a lot of books of all sorts of topics.
I think these kind of essay exams (with tight time limits) may help, but unlike Korea, United States is a fairly large country, and it may be too difficult to have all the students seeking admision in one place.