David Douard <david.douard@logilab.fr> [Fri, 19 Feb 2016 11:03:32 +0100] rev 11147
[datafeed] do NOT call commit in DataFeedXMLParser.process() (closes #10928592)
and so, remove more useless code.
Doing a commit in DataFeedXMLParser.process() is a bad idea because this method
is called for every imported/updated entity, before handling deletions. So if
we commit here, odds are quite high that we're violating some integrity
constraint and end up with a ValidationError.