nobody nowadays needs to know how to hand-calculate gnarly trigonometric integrals, or solve systems using Cramer's rule. it is just pointless hoop jumping as far as I can tell.
at the same time, avoiding teaching calculus in high school still seems like a disaster to me. people are saying "teach statistics and data instead of calculus" -- but how can you hope to understand statistics if you can't compute an expected value, which is defined as an integral? if you don't know how a PDF and CDF relate to each other? calculus is just very important, there's no way around it.
you could have a calculus class with much less mindless computation though -- it would probably be both easier for students challenged by this and more useful for all students.