TPS-786 [5.5.1]tMDMDelete can't delete all records of one entity(TMDM-7953)

TMDM-7953 tMDMDelete can't delete all records of one entity
- Get className without package prefix
https://jira.talendforge.org/browse/TMDM-7953

cherry-picked from 37ca7f127b26c4c2750b9127980bbba08ef029e1