Wait to delete planet tif when creating scene
Wait to delete planet tif when creating scene

Prior to this commit the file was being deleted a little too eagerly
and before all processing of it was finished. This commit fixes that
by deleting it after the scene is created.

raster-foundry/raster-foundry,raster-foundry/raster-foundry,aaronxsu/raster-foundry,azavea/raster-foundry,aaronxsu/raster-foundry,azavea/raster-foundry,azavea/raster-foundry,raster-foundry/raster-foundry,azavea/raster-foundry,azavea/raster-foundry,aaronxsu/raster-foundry,aaronxsu/raster-foundry