Remove unneeded import. (#769)
Remove unneeded import. (#769)

Summary:
Pull Request resolved: https://github.com/mapillary/OpenSfM/pull/769

pysfm seems not to be in use.

Reviewed By: chrert

Differential Revision: D29326327

fbshipit-source-id: 67b989947a31bef0be12e3a1754664a16b61b47e

mapillary/OpenSfM,mapillary/OpenSfM,mapillary/OpenSfM,mapillary/OpenSfM,mapillary/OpenSfM