block: Removed unused function bdrv_write_sync

Signed-off-by: NFrediano Ziglio <freddy77@gmail.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

block.c

@@ -1110,19 +1110,6 @@ int bdrv_pwrite_sync(BlockDriverState *bs, int64_t offset,
     return 0;
 }
 
-/*
- * Writes to the file and ensures that no writes are reordered across this
- * request (acts as a barrier)
- *
- * Returns 0 on success, -errno in error cases.
- */
-int bdrv_write_sync(BlockDriverState *bs, int64_t sector_num,
-    const uint8_t *buf, int nb_sectors)
-{
-    return bdrv_pwrite_sync(bs, BDRV_SECTOR_SIZE * sector_num,
-        buf, BDRV_SECTOR_SIZE * nb_sectors);
-}
-
 /**
  * Truncate file to 'offset' bytes (needed only for file protocols)
  */

block.h

@@ -85,8 +85,6 @@ int bdrv_pwrite(BlockDriverState *bs, int64_t offset,
                 const void *buf, int count);
 int bdrv_pwrite_sync(BlockDriverState *bs, int64_t offset,
     const void *buf, int count);
-int bdrv_write_sync(BlockDriverState *bs, int64_t sector_num,
-    const uint8_t *buf, int nb_sectors);
 int bdrv_truncate(BlockDriverState *bs, int64_t offset);
 int64_t bdrv_getlength(BlockDriverState *bs);
 int64_t bdrv_get_allocated_file_size(BlockDriverState *bs);