staging: rtl8188eu: remove unused variables from core/rtw_efuse.c

Remove set but unused variables from within the file core/rtw_efuse.c
in the function efuse_read_phymap_from_txpktbuf, as they are triggering
kernel test robot warnings. Also, remove the local 'lenc' array as well,
as nothing is done with its values. Keep the two usb_read8 calls
however, as this patch is purely for warnings, not to change behaviour
of the code.
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20210615223607.13863-4-phil@philpotter.co.ukSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8188eu/core/rtw_efuse.c

@@ -234,16 +234,9 @@ static void efuse_read_phymap_from_txpktbuf(
 		hi32 = usb_read32(adapter, REG_PKTBUF_DBG_DATA_H);
 
 		if (i == 0) {
-			u8 lenc[2];
-			u16 lenbak, aaabak;
-			u16 aaa;
+			usb_read8(adapter, REG_PKTBUF_DBG_DATA_L);
+			usb_read8(adapter, REG_PKTBUF_DBG_DATA_L + 1);
 
-			lenc[0] = usb_read8(adapter, REG_PKTBUF_DBG_DATA_L);
-			lenc[1] = usb_read8(adapter, REG_PKTBUF_DBG_DATA_L + 1);
-
-			aaabak = le16_to_cpup((__le16 *)lenc);
-			lenbak = le16_to_cpu(*((__le16 *)lenc));
-			aaa = le16_to_cpup((__le16 *)&lo32);
 			len = le16_to_cpu(*((__le16 *)&lo32));
 
 			limit = min_t(u16, len - 2, limit);