Remove "MH-11296 LTI Post opencast.httpcontext temp fix for 2.1.x" workaround. That workaround tied the opencast-lti module to opencast-kernel. The issue was resolved in the Karaf 4.0.6 update. The opencast-kernel module is not longer tied to opencast-lti and can removed from from workers assemblies. Workers do not provide LTI tools services.