qcacld-3.0: Remove session_id from hdd_adapter

Originally struct hdd_adapter only used the legacy term session_id to
reference a session. To align with converged naming it was desirable
to change this to vdev_id. In order to ease the transition change
Id92b1a7bb9721564ba01184809fec98be2143545 ("qcacld-3.0: Alias vdev_id
to session_id in hdd_adapter") replaced the session_id field with a
union that contains both a session_id and a vdev_id field. Subsequent
changes replaced all session_id field references with vdev_id.

Now that all references to hdd_adapter field session_id have been
changed to vdev_id, remove the union that was previously added,
leaving behind just the vdev_id field.

Change-Id: I7a2e0812dcd9e9a9f229d1e310785710ab9d4acf
CRs-Fixed: 2393156
1 file changed