iwlegacy: 3945-rs: Remove all non-conformant kernel-doc headers

iwlegacy: 3945-rs: Remove all non-conformant kernel-doc headers

Fixes the following W=1 kernel build warning(s):

 drivers/net/wireless/intel/iwlegacy/3945-rs.c:136: warning: Function parameter or member 'rs_sta' not described in 'il3945_rate_scale_flush_wins'
 drivers/net/wireless/intel/iwlegacy/3945-rs.c:243: warning: Function parameter or member 'rs_sta' not described in 'il3945_collect_tx_data'
 drivers/net/wireless/intel/iwlegacy/3945-rs.c:243: warning: Function parameter or member 'win' not described in 'il3945_collect_tx_data'
 drivers/net/wireless/intel/iwlegacy/3945-rs.c:243: warning: Function parameter or member 'success' not described in 'il3945_collect_tx_data'
 drivers/net/wireless/intel/iwlegacy/3945-rs.c:243: warning: Function parameter or member 'retries' not described in 'il3945_collect_tx_data'
 drivers/net/wireless/intel/iwlegacy/3945-rs.c:243: warning: Function parameter or member 'idx' not described in 'il3945_collect_tx_data'
 drivers/net/wireless/intel/iwlegacy/3945-rs.c:429: warning: Function parameter or member 'il_rate' not described in 'il3945_rs_tx_status'
 drivers/net/wireless/intel/iwlegacy/3945-rs.c:429: warning: Function parameter or member 'sband' not described in 'il3945_rs_tx_status'
 drivers/net/wireless/intel/iwlegacy/3945-rs.c:429: warning: Function parameter or member 'sta' not described in 'il3945_rs_tx_status'
 drivers/net/wireless/intel/iwlegacy/3945-rs.c:429: warning: Function parameter or member 'il_sta' not described in 'il3945_rs_tx_status'
 drivers/net/wireless/intel/iwlegacy/3945-rs.c:429: warning: Function parameter or member 'skb' not described in 'il3945_rs_tx_status'
 drivers/net/wireless/intel/iwlegacy/3945-rs.c:606: warning: Function parameter or member 'il_r' not described in 'il3945_rs_get_rate'
 drivers/net/wireless/intel/iwlegacy/3945-rs.c:606: warning: Function parameter or member 'sta' not described in 'il3945_rs_get_rate'
 drivers/net/wireless/intel/iwlegacy/3945-rs.c:606: warning: Function parameter or member 'il_sta' not described in 'il3945_rs_get_rate'
 drivers/net/wireless/intel/iwlegacy/3945-rs.c:606: warning: Function parameter or member 'txrc' not described in 'il3945_rs_get_rate'

Cc: Stanislaw Gruszka <stf_xl@wp.pl>
Cc: Kalle Valo <kvalo@codeaurora.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Linux Wireless <ilw@linux.intel.com>
Cc: linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200826093401.1458456-5-lee.jones@linaro.org