f2fs: cleanup statement about max orphan inodes calc

Through each macro, we can read the meaning easily.
Signed-off-by: Changman Lee <cm224.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

fs/f2fs/checkpoint.c

@@ -1104,13 +1104,6 @@ void init_ino_entry_info(struct f2fs_sb_info *sbi)
 		im->ino_num = 0;
 	}
 
-	/*
-	 * considering 512 blocks in a segment 8+cp_payload blocks are
-	 * needed for cp and log segment summaries. Remaining blocks are
-	 * used to keep orphan entries with the limitation one reserved
-	 * segment for cp pack we can have max 1020*(504-cp_payload)
-	 * orphan entries
-	 */
 	sbi->max_orphans = (sbi->blocks_per_seg - F2FS_CP_PACKS -
 			NR_CURSEG_TYPE - __cp_payload(sbi)) *
 				F2FS_ORPHANS_PER_BLOCK;