Revert "fix imperfections of existence check of the model class in opPluginInstallTask::execute() (refs #3631, BP from #1606)"
Revert "fix imperfections of existence check of the model class in opPluginInstallTask::execute() (refs #3631, BP from #1606)"

This reverts commit 733605a956e735fb1d31ff92fdb42caff52d5253.

openpne/OpenPNE3,openpne/OpenPNE3,openpne/OpenPNE3,openpne/OpenPNE3