[FMI] Remove the COE-based co-simulation feature
The implementation of the current FMI-based co-simulation feature (based on the ...) would need to be completely reconsidered (cf. #3926 (closed)), and require a set of fundamental improvements to be valuable. However, given the availability of specialized open source tools (e.g., OpenModelica), and the interoperability provided by AF3's FMU export functionality (as seen here), such an effort is not justifiable. Thus, the co-simulation feature shall be removed and efforts shall be focused on improving the interoperability (e.g., by means of the AF3's FMU export functionality).
Given the current coupling between the FMU export functionality and the FMI-based co-simulation feature, a refactoring of the org.fortiss.af3.cosimulation[.ui]
plugins is expected.