Revert: Pin a newer @platforms in the Bazel workspace to fix Mac ARM builds.
Revert: Pin a newer @platforms in the Bazel workspace to fix Mac ARM builds.

The @platforms repository has been updated in the @tf_runtime repository, which was pulling in the old version of @platforms. We no longer need to override @platforms in the JAX WORKSPACE.

PiperOrigin-RevId: 440375016

google/jax,google/jax,google/jax,google/jax