staging: rtl8192e: Remove unused variable rate_adaptive_disabled

rate_adaptive_disabled is initialized to 0 and unchanged. The equation
results accordingly. Remove dead code.
Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/31ba05bce9966dfac15cac15aa0e79cf36fad27f.1696266964.git.philipp.g.hortmann@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8192e/rtl8192e/rtl_dm.c

@@ -284,9 +284,6 @@ static void _rtl92e_dm_check_rate_adaptive(struct net_device *dev)
 	if (!priv->up)
 		return;
 
-	if (pra->rate_adaptive_disabled)
-		return;
-
 	if (priv->rtllib->mode != WIRELESS_MODE_N_24G)
 		return;
 

drivers/staging/rtl8192e/rtllib.h

@@ -1146,7 +1146,6 @@ struct sw_cam_table {
 
 #define   TOTAL_CAM_ENTRY				32
 struct rate_adaptive {
-	u8				rate_adaptive_disabled;
 	u8				ratr_state;
 	u16				reserve;