remove duplicate

Author: Libero0809

genesis/engine/solvers/rigid/array_class.py

@@ -58,17 +58,6 @@ def __init__(self, solver):
 # =========================================== Collider ===========================================
 
 
-@ti.data_oriented
-class ConstraintState:
-    """
-    Class to store the mutable constraint data, all of which type is [ti.fields].
-    """
-
-    def __init__(self, solver):
-        f_batch = solver._batch_shape
-        self.n_constraints = ti.field(dtype=gs.ti_int, shape=f_batch())
-
-
 @ti.data_oriented
 class ColliderState:
     """