ERP5: remove Converter

This skeleton became cloudooo several years ago and we don't need this
here anymore.
3 jobs for fix/remove_converter in 0 seconds
Status Job ID Name Coverage
  External
passed ERP5.UnitTest-TestRunner2

01:07:37

failed ERP5.UnitTest-TestRunner2

02:01:01

canceled ERP5.UnitTest-TestRunner2