staging: rtl8192u: Remove function dm_backup_dynamic_mechanism_state()

Remove unused function dm_backup_dynamic_mechanism_state.
Issue found with Coccinelle.
Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8192u/r8192U_dm.c

@@ -1563,18 +1563,6 @@ static void dm_bb_initialgain_restore(struct net_device *dev)
 
 }	/* dm_BBInitialGainRestore */
 
-void dm_backup_dynamic_mechanism_state(struct net_device *dev)
-{
-	struct r8192_priv *priv = ieee80211_priv(dev);
-
-	/* Fsync to avoid reset */
-	priv->bswitch_fsync  = false;
-	priv->bfsync_processing = false;
-	/* Backup BB InitialGain */
-	dm_bb_initialgain_backup(dev);
-
-}	/* DM_BackupDynamicMechanismState */
-
 static void dm_bb_initialgain_backup(struct net_device *dev)
 {
 	struct r8192_priv *priv = ieee80211_priv(dev);

drivers/staging/rtl8192u/r8192U_dm.h

@@ -161,7 +161,6 @@ void hal_dm_watchdog(struct net_device *dev);
 void init_rate_adaptive(struct net_device *dev);
 void dm_txpower_trackingcallback(struct work_struct *work);
 void dm_restore_dynamic_mechanism_state(struct net_device *dev);
-void dm_backup_dynamic_mechanism_state(struct net_device *dev);
 void dm_force_tx_fw_info(struct net_device *dev,
 			 u32 force_type, u32 force_value);
 void dm_init_edca_turbo(struct net_device *dev);