remove matern jax import

Author: Jammy2211

autoarray/inversion/regularization/matern_kernel.py

@@ -1,6 +1,4 @@
 from __future__ import annotations
-import jax.numpy as jnp
-import jax.scipy.special as jsp
 import numpy as np
 import math
 from typing import TYPE_CHECKING
@@ -10,10 +8,6 @@
 
 from autoarray.inversion.regularization.abstract import AbstractRegularization
 
-from autoarray import numba_util
-
-import jax.numpy as jnp
-
 
 def kv_xp(v, z, xp=np):
     """