mb/google/snappy: Remove unneeded 'else'

'else' is not needed after a 'break' or 'return'.

Change-Id: I7b6c319a58b9f4f47de19336d18d00b73d3d3772
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33335
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Vlado Cibic
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

src/mainboard/google/reef/variants/snappy/mainboard.c

@@ -70,8 +70,8 @@ uint8_t variant_board_sku(void)
 		if ((ch < '0') || (ch > '9')) {
 			vpd_sku_num = -1;
 			break;
-		} else
-			vpd_sku_num = vpd_sku_num * 10 + (ch - '0');
+		}
+		vpd_sku_num = vpd_sku_num * 10 + (ch - '0');
 	}
 
 	if (vpd_sku_num != -1)