wifi: cfg80211: remove dead/unused enum value

Drop an unused (extra) enum value to prevent a kernel-doc warning.

cfg80211.h:1492: warning: Excess enum value 'STATION_PARAM_APPLY_STA_TXPOWER' description in 'station_parameters_apply_mask'

Fixes: 2d8b08fe ("wifi: cfg80211: fix kernel-doc warnings all over the file")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: linux-wireless@vger.kernel.org
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Link: https://lore.kernel.org/r/20230710230312.31197-3-rdunlap@infradead.orgSigned-off-by: Johannes Berg <johannes.berg@intel.com>

include/net/cfg80211.h

@@ -1482,7 +1482,6 @@ struct iface_combination_params {
  * @STATION_PARAM_APPLY_UAPSD: apply new uAPSD parameters (uapsd_queues, max_sp)
  * @STATION_PARAM_APPLY_CAPABILITY: apply new capability
  * @STATION_PARAM_APPLY_PLINK_STATE: apply new plink state
- * @STATION_PARAM_APPLY_STA_TXPOWER: apply tx power for STA
  *
  * Not all station parameters have in-band "no change" signalling,
  * for those that don't these flags will are used.