Comment 7 for bug 1620173

Unfortunately fixing this would be causing true regressions in at least ktexteditor and pyqt5:

https://requests.ci-train.ubuntu.com/static/britney/landing-1920/yakkety/excuses.html

https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-yakkety-ci-train-ppa-service-landing-1920/yakkety/amd64/k/ktexteditor/20160914_111856@/log.gz
https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-yakkety-ci-train-ppa-service-landing-1920/yakkety/amd64/p/pyqt5/20160914_140056@/log.gz

I'm not sure if rebuilding qtxmlpatterns would be enough or what other kind of problems there could be lurking. Since 16.10 release is coming closer, I think the set of these three patches (that remove a symbol among else) is too risky. The fix would eventually be in Qt 5.7 in Ubuntu 17.04, unless of course a less invasive fix could be had for 16.10.