Drop DB Control Repository

what should i do ? I post This Topic to show second way to drop dbcontrol let Start :
 
emca
should be used to drop DB Control repository as follows:
emca -deconfig dbcontrol db -repos drop

Steps :

1.Shutdown database

 SHUTDOWN IMMEDIATE;

2.Remove EM job

EXEC sysman.emd_maintenance.remove_em_dbms_jobs;

3.Revoke DBA privilages from SYSMAN user

REVOKE dba FROM sysman;

4.Run 

DECLARE
  CURSOR c1 IS
  SELECT owner, synonym_name name
  FROM dba_synonyms
  WHERE table_owner = 'SYSMAN';
BEGIN
  FOR r1 IN c1 LOOP
    IF r1.owner = 'PUBLIC' THEN
      EXECUTE IMMEDIATE 'DROP PUBLIC SYNONYM '||r1.name;
    ELSE
      EXECUTE IMMEDIATE 'DROP SYNONYM '||r1.owner||'.'||r1.name;
    END IF;
  END LOOP;
END;
/

 5.Drop MGMT_VIEW user.

DROP USER MGMT_VIEW CASCADE;

6.Drop MGMT_VIEW role

DROP ROLE mgmt_user;

7.Drop SYSMAN user

DROP USER sysman CASCADE;

8.Disable restricted mode

ALTER SYSTEM DISABLE RESTRICTED SESSION;

 Thank you
Osama