remove unused define

Co-authored-by: will-v-pi <[email protected]>

Author: oyama

flash/partition_info/partition_info.c

@@ -11,7 +11,6 @@
 
 #define PART_LOC_FIRST(x) ( ((x) & PICOBIN_PARTITION_LOCATION_FIRST_SECTOR_BITS) >> PICOBIN_PARTITION_LOCATION_FIRST_SECTOR_LSB )
 #define PART_LOC_LAST(x)  ( ((x) & PICOBIN_PARTITION_LOCATION_LAST_SECTOR_BITS)  >> PICOBIN_PARTITION_LOCATION_LAST_SECTOR_LSB )
-#define WORD_PADDED_BYTES(x)  ((x + 3) & ~3)
 
 #define WORD_SIZE  4
 #define PARTITION_LOCATION_AND_FLAGS_SIZE  2