staging: rtl8188eu: core: Removed unnecessary return keyword.

This patch fixes
WARNING:  void function return statements are not generally useful
checkpatch.pl warning in rtw_efuse.c by using this coccinelle script

@r@
identifier i;
@@
void i(...)
{
...
-return;
}

Signed-off-by: Gulsah Kose <gulsah.1004@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8188eu/core/rtw_efuse.c

@@ -322,7 +322,6 @@ void efuse_ReadEFuse(struct adapter *Adapter, u8 efuseType, u16 _offset, u16 _si
 		iol_read_efuse(Adapter, 0, _offset, _size_byte, pbuf);
 		iol_mode_enable(Adapter, 0);
 	}
-	return;
 }
 
 /* Do not support BT */