NGL if you take out what's left of the resources in 5e you'll reduce the game to exclusively standing in front of the enemy taking turns hitting each other, instead of just mostly.
The truth is if you want a resourceless game you're gonna have to play a different system, and if you're gonna play a different system you're gonna have to run it. Luckily, it's very easy to get groups for new systems, because you just tell the 5e players it's D&D and they probably won't even notice the rules changed.