Remove obsolete deprecation

Followup to jax-ml#24748, which removed the deprecated `reshape` parameter.

PiperOrigin-RevId: 702856398

Author: Jake VanderPlas

jax/_src/deprecations.py

@@ -125,7 +125,6 @@ def warn(deprecation_id: str, message: str, stacklevel: int) -> None:
 register('jax-dlpack-import-legacy')
 register("jax-numpy-astype-complex-to-real")
 register("jax-numpy-array-none")
-register('jax-numpy-reshape-newshape')
 register('jax-numpy-clip-args')
 register('jax-numpy-linalg-matrix_rank-tol')
 register('jax-numpy-linalg-pinv-rcond')