Merge "fs_mgr: Revert "Try to recover corrupted ext4 /data with backup...

Merge "fs_mgr: Revert "Try to recover corrupted ext4 /data with backup superblock"" am: 64d1a3d6 am: 4a15f521 am: 56b43bc0

Original change: https://android-review.googlesource.com/c/platform/system/core/+/1387869

Change-Id: I5776f598e4893a15b10d6c84912b1ce873c6bb32