flash_sector_t -> struct flash_sector

Remove misleading typedef and redundant suffix from struct flash_sector.

src/flash/str9xpec.c

@@ -205,7 +205,7 @@ static int str9xpec_build_block_list(struct flash_bank_s *bank)
 	num_sectors = b0_sectors + b1_sectors;
 
 	bank->num_sectors = num_sectors;
-	bank->sectors = malloc(sizeof(flash_sector_t) * num_sectors);
+	bank->sectors = malloc(sizeof(struct flash_sector) * num_sectors);
 	str9xpec_info->sector_bits = malloc(sizeof(uint32_t) * num_sectors);
 
 	num_sectors = 0;