staging: exfat: drop unused function parameter

sbi parameter not used inside the function so remove it.
Also cleanup unused variables generated by this change.
Signed-off-by: Valentin Vidic <vvidic@valentin-vidic.from.hr>
Link: https://lore.kernel.org/r/20190908173539.26963-1-vvidic@valentin-vidic.from.hrSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/exfat/exfat_super.c

@@ -56,8 +56,7 @@ static void exfat_write_super(struct super_block *sb);
 #define UNIX_SECS_2108    4354819200L
 
 /* Convert a FAT time/date pair to a UNIX date (seconds since 1 1 70). */
-static void exfat_time_fat2unix(struct exfat_sb_info *sbi,
-				struct timespec64 *ts, struct date_time_t *tp)
+static void exfat_time_fat2unix(struct timespec64 *ts, struct date_time_t *tp)
 {
 	ts->tv_sec = mktime64(tp->Year + 1980, tp->Month + 1, tp->Day,
 			      tp->Hour, tp->Minute, tp->Second);
@@ -66,8 +65,7 @@ static void exfat_time_fat2unix(struct exfat_sb_info *sbi,
 }
 
 /* Convert linear UNIX date to a FAT time/date pair. */
-static void exfat_time_unix2fat(struct exfat_sb_info *sbi,
-				struct timespec64 *ts, struct date_time_t *tp)
+static void exfat_time_unix2fat(struct timespec64 *ts, struct date_time_t *tp)
 {
 	time64_t second = ts->tv_sec;
 	struct tm tm;
@@ -3349,9 +3347,9 @@ static int exfat_fill_inode(struct inode *inode, struct file_id_t *fid)
 	inode->i_blocks = ((i_size_read(inode) + (p_fs->cluster_size - 1))
 				& ~((loff_t)p_fs->cluster_size - 1)) >> 9;
 
-	exfat_time_fat2unix(sbi, &inode->i_mtime, &info.ModifyTimestamp);
-	exfat_time_fat2unix(sbi, &inode->i_ctime, &info.CreateTimestamp);
-	exfat_time_fat2unix(sbi, &inode->i_atime, &info.AccessTimestamp);
+	exfat_time_fat2unix(&inode->i_mtime, &info.ModifyTimestamp);
+	exfat_time_fat2unix(&inode->i_ctime, &info.CreateTimestamp);
+	exfat_time_fat2unix(&inode->i_atime, &info.AccessTimestamp);
 
 	return 0;
 }
@@ -3412,8 +3410,6 @@ static void exfat_destroy_inode(struct inode *inode)
 
 static int exfat_write_inode(struct inode *inode, struct writeback_control *wbc)
 {
-	struct super_block *sb = inode->i_sb;
-	struct exfat_sb_info *sbi = EXFAT_SB(sb);
 	struct dir_entry_t info;
 
 	if (inode->i_ino == EXFAT_ROOT_INO)
@@ -3422,9 +3418,9 @@ static int exfat_write_inode(struct inode *inode, struct writeback_control *wbc)
 	info.Attr = exfat_make_attr(inode);
 	info.Size = i_size_read(inode);
 
-	exfat_time_unix2fat(sbi, &inode->i_mtime, &info.ModifyTimestamp);
-	exfat_time_unix2fat(sbi, &inode->i_ctime, &info.CreateTimestamp);
-	exfat_time_unix2fat(sbi, &inode->i_atime, &info.AccessTimestamp);
+	exfat_time_unix2fat(&inode->i_mtime, &info.ModifyTimestamp);
+	exfat_time_unix2fat(&inode->i_ctime, &info.CreateTimestamp);
+	exfat_time_unix2fat(&inode->i_atime, &info.AccessTimestamp);
 
 	ffsWriteStat(inode, &info);