klippy: Eliminate high-level build_config phase

Now that the mcu objects can be created prior to connecting to the
mcu, it is no longer necessary to separate the init and build_config
phases in the high-level code.  Move the mcu objection creation from
the build_config phase to the init phase and eliminate the
build_config phase.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>

klippy/cartesian.py

@@ -21,9 +21,6 @@ class CartKinematics:
         self.steppers[0].set_max_jerk(max_xy_halt_velocity, max_accel)
         self.steppers[1].set_max_jerk(max_xy_halt_velocity, max_accel)
         self.steppers[2].set_max_jerk(0., self.max_z_accel)
-    def build_config(self):
-        for stepper in self.steppers:
-            stepper.build_config()
     def set_position(self, newpos):
         for i in StepList:
             s = self.steppers[i]