staging: rtl8192e: Remove unused function rtl92e_disable_nic

Remove unused function rtl92e_disable_nic to shorten code.
Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/5ce2ef58f66e25d7db7432c56c7b7c37a2b15fc1.1681627603.git.philipp.g.hortmann@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8192e/rtl8192e/rtl_core.c

@@ -2301,22 +2301,6 @@ bool rtl92e_enable_nic(struct net_device *dev)
 	return init_status;
 }
 
-bool rtl92e_disable_nic(struct net_device *dev)
-{
-	struct r8192_priv *priv = rtllib_priv(dev);
-	u8 tmp_state = 0;
-
-	priv->bdisable_nic = true;
-	tmp_state = priv->rtllib->state;
-	rtllib_softmac_stop_protocol(priv->rtllib, 0, false);
-	priv->rtllib->state = tmp_state;
-	_rtl92e_cancel_deferred_work(priv);
-	rtl92e_irq_disable(dev);
-
-	rtl92e_stop_adapter(dev, false);
-	return true;
-}
-
 module_pci_driver(rtl8192_pci_driver);
 
 void rtl92e_check_rfctrl_gpio_timer(struct timer_list *t)

drivers/staging/rtl8192e/rtl8192e/rtl_core.h

@@ -433,7 +433,6 @@ u8 rtl92e_rx_db_to_percent(s8 antpower);
 void rtl92e_copy_mpdu_stats(struct rtllib_rx_stats *psrc_stats,
 			    struct rtllib_rx_stats *ptarget_stats);
 bool rtl92e_enable_nic(struct net_device *dev);
-bool rtl92e_disable_nic(struct net_device *dev);
 
 bool rtl92e_set_rf_state(struct net_device *dev,
 			 enum rt_rf_power_state state_to_set,