Clean up super_errors duplications

[cknitt]

jscomp/super_errors/super_code_frame.ml and jscomp/super_errors/super_location.ml are currently duplicated into res_syntax/src/res_diagnostics_printing_utils.ml.

This can be cleaned up after #5876.

[ryyppy]

This can be cleaned up after #5876

What does "clean up" mean?

If I am not mistaken, the res_diagnostics_printing_utils.ml is the more up-to-date version of the diagnostics printer, so one would need to replace the newest logic in jscomp/super_errors/super_location.ml, then remove the original res_diagnostics module and replace it with the super_location? Or should it be the other way round due to submodule relations?