Remove incorrect text in P4runtime-spec.

Signed-off-by: Matthew Lam <[email protected]>

docs/v1/P4Runtime-Spec.mdk

@@ -4569,7 +4569,7 @@ semantics.
  return `INVALID_ARGUMENT`. The `metadata` field is an arbitrary `bytes` value
  which is opaque to the target. There is no requirement of where this is
  stored, but it must be returned by the server along with the rest of the entry
- when the client performs a read on the entry. The `fallback_ports` field.
+ when the client performs a read on the entry.
 * `MODIFY`: Modify the set of replicas and metadata for a given multicast group
  entry, indexed by the given `multicast_group_id`. Same restrictions as
  `INSERT` apply here.
@@ -4680,7 +4680,6 @@ semantics:
  service for each clone packet instance will be set to the value programmed in
  the clone session entry (`class_of_service` field). This value must be a valid
  value for the PSA `ClassOfService_t` type, which supports runtime translation
- by default [@PSATranslation], or the server must return
  `INVALID_ARGUMENT`. See [PSA Metadata
  Translation](#sec-translation-of-port-numbers) for more information. The
  `packet_length_bytes` field must be set to a non-zero value if the clone