staging: rtl8192e: Remove unused macro RT_SET_PS_LEVEL

Remove unused macro RT_SET_PS_LEVEL to shorten code.
Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/0d397210830f77ad3231c3b4a0465ae89aacb962.1681627603.git.philipp.g.hortmann@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8192e/rtllib.h

@@ -100,7 +100,6 @@ static inline void *netdev_priv_rsl(struct net_device *dev)
 	((psc->CurPsLevel & _PS_FLAG) ? true : false)
 #define	RT_CLEAR_PS_LEVEL(psc, _PS_FLAG)	\
 	(psc->CurPsLevel &= (~(_PS_FLAG)))
-#define	RT_SET_PS_LEVEL(psc, _PS_FLAG)	(psc->CurPsLevel |= _PS_FLAG)
 
 /* defined for skb cb field */
 /* At most 28 byte */