crypto: caam/jr - remove incorrect reference to caam_jr_register()

caam_jr_register() function is no longer part of the driver since
commit 6dad4115 ("crypto: caam - Remove unused functions from Job Ring")

This patch removes a comment referencing the function.
Signed-off-by: Dan Douglass <dan.douglass@nxp.com>
Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/caam/jr.c

@@ -339,8 +339,7 @@ EXPORT_SYMBOL(caam_jr_free);
  * caam_jr_enqueue() - Enqueue a job descriptor head. Returns -EINPROGRESS
  * if OK, -ENOSPC if the queue is full, -EIO if it cannot map the caller's
  * descriptor.
- * @dev:  device of the job ring to be used. This device should have
- *        been assigned prior by caam_jr_register().
+ * @dev:  struct device of the job ring to be used
  * @desc: points to a job descriptor that execute our request. All
  *        descriptors (and all referenced data) must be in a DMAable
  *        region, and all data references must be physical addresses