staging: rtl8188eu: Remove unused function declaration and macro

Signed-off-by: navin patidar <navin.patidar@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8188eu/include/rtw_io.h

@@ -239,7 +239,6 @@ struct io_priv {
 u8 _rtw_read8(struct adapter *adapter, u32 addr);
 u16 _rtw_read16(struct adapter *adapter, u32 addr);
 u32 _rtw_read32(struct adapter *adapter, u32 addr);
-void _rtw_read_mem(struct adapter *adapter, u32 addr, u32 cnt, u8 *pmem);
 void _rtw_read_port(struct adapter *adapter, u32 addr, u32 cnt, u8 *pmem);
 void _rtw_read_port_cancel(struct adapter *adapter);
 
@@ -260,8 +259,6 @@ void _rtw_write_port_cancel(struct adapter *adapter);
 #define rtw_read8(adapter, addr) _rtw_read8((adapter), (addr))
 #define rtw_read16(adapter, addr) _rtw_read16((adapter), (addr))
 #define rtw_read32(adapter, addr) _rtw_read32((adapter), (addr))
-#define rtw_read_mem(adapter, addr, cnt, mem)				\
-	_rtw_read_mem((adapter), (addr), (cnt), (mem))
 #define rtw_read_port(adapter, addr, cnt, mem)				\
 	_rtw_read_port((adapter), (addr), (cnt), (mem))
 #define rtw_read_port_cancel(adapter) _rtw_read_port_cancel((adapter))