Delete file test

```
2014-12-13 08:45:08,275 DEBUG org.dspace.identifier.DOIIdentifierProvider @ deleting doi:10.5072/FK2dryad.k6dm8.2/2.2
2014-12-13 08:45:08,279 DEBUG org.dspace.identifier.DOIIdentifierProvider @ moveCanonical will be called on doi:10.5072/FK2dryad.k6dm8/2, collection 10255/2, myDataPkgColl 10255/3
2014-12-13 08:45:08,283 DEBUG org.dspace.identifier.DOIIdentifierProvider @ mintDOI is going to be called on doi:10.5072/FK2dryad.k6dm8/2
2014-12-13 08:45:08,292 INFO  org.dspace.content.Item @ daisieh@gmail.com:session_id=8316B6C91CD280AEA2FF35097FDF08D6:ip_addr=10.0.2.2:remove_bundle:item_id=234,bundle_id=164
2014-12-13 08:45:08,297 INFO  org.dspace.content.Bundle @ daisieh@gmail.com:session_id=8316B6C91CD280AEA2FF35097FDF08D6:ip_addr=10.0.2.2:delete_bundle:bundle_id=164
2014-12-13 08:45:08,299 INFO  org.dspace.content.Bundle @ daisieh@gmail.com:session_id=8316B6C91CD280AEA2FF35097FDF08D6:ip_addr=10.0.2.2:remove_bitstream:bundle_id=164,bitstream_id=83
2014-12-13 08:45:08,310 DEBUG org.dspace.identifier.DOIIdentifierProvider @ identifier doi:10.5061/dryad.ad is not found
```