I disagree with the notion that strength = brute force.
Brute Force isn't just strength. Endurance is also a factor, as sometimes it takes a long repeated assault on a structural weakpoint to overcome a barrier. There is also the question of the body's ability to withstand trauma. If I slam my shoulder into a door, you better believe i'm going to feel it. Maybe I am strong enough, and can hit the weak point long enough without getting tired, but my body can't take the beating. If I'm using a tool, perhaps my arms can't take the intense vibrations from the feedback anymore. Also, what about the ability to know exactly where to direct my force so that I get the most out of my muscles, or which part of the body/which tool to use, and how?
Strong people aren't always great at being brutes. One guy might be able to bench 450 but he can't take slamming his shoulder against a metal wall for more than a minute. Another guy might be able to only bench 250 but he can slam all day, he loves the pain. So no, strength doesn't make brute force as a skill redundant. This is why having a skill like Brute Force is necessary because it can be governed by a main attribute (STR) and sister attributes (END CON PER what have you).