1.1.3dev: Removed use of `repository_sync_per_request` attribute. Refs #11885, #11776.

This should have been removed in [13393]. Thanks to Peter Suter for spotting the issue.


git-svn-id: http://trac.edgewall.org/intertrac/log:/trunk@13544 af82e41b-90c4-0310-8c96-b1721e28e2e2