Christopher Tate c2af5d3bf8 Get rid of now-superfluous "backup or restore in progress" tracking
Now that backup/restore/etc operations are queued and serialized, we no longer
need to use external state tracking to prevent overlapping operations.

Change-Id: I14f2a5d740cb97ae062aad55a06f49a2be5dd985
2010-02-02 15:24:39 -08:00
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