staging: r8188eu: _free_pwrlock is empty

Remove the empty _free_pwrlock function and rtw_free_pwrctrl_priv,
which is just a wrapper around _free_pwrlock.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20210913185110.3065-4-martin@kaiser.cxSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/r8188eu/core/rtw_pwrctrl.c

@@ -371,14 +371,6 @@ void rtw_init_pwrctrl_priv(struct adapter *padapter)
 	timer_setup(&pwrctrlpriv->pwr_state_check_timer, pwr_state_check_handler, 0);
 }
 
-void rtw_free_pwrctrl_priv(struct adapter *adapter)
-{
-	struct pwrctrl_priv *pwrctrlpriv = &adapter->pwrctrlpriv;
-
-	_free_pwrlock(&pwrctrlpriv->lock);
-
-}
-
 inline void rtw_set_ips_deny(struct adapter *padapter, u32 ms)
 {
 	struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;

drivers/staging/r8188eu/include/rtw_pwrctrl.h

@@ -50,10 +50,6 @@ static inline void _init_pwrlock(struct semaphore  *plock)
 	sema_init(plock, 1);
 }
 
-static inline void _free_pwrlock(struct semaphore  *plock)
-{
-}
-
 static inline void _enter_pwrlock(struct semaphore  *plock)
 {
 	_rtw_down_sema(plock);

drivers/staging/r8188eu/os_dep/os_intfs.c

@@ -933,8 +933,6 @@ u8 rtw_free_drv_sw(struct adapter *padapter)
 
 	_rtw_free_recv_priv(&padapter->recvpriv);
 
-	rtw_free_pwrctrl_priv(padapter);
-
 	rtl8188e_free_hal_data(padapter);
 
 	/* free the old_pnetdev */