Rename inertia torque function in util.
Rename inertia torque function in util.

oliverlee/pydy,skidzo/pydy,skidzo/pydy,skidzo/pydy,oliverlee/pydy,jcrist/pydy,jcrist/pydy,Shekharrajak/pydy,jcrist/pydy,jcrist/pydy,oliverlee/pydy,skidzo/pydy,jcrist/pydy,Shekharrajak/pydy,jcrist/pydy,jcrist/pydy,Shekharrajak/pydy,Shekharrajak/pydy