REPORTDESIGN : Remove usage of DBG_CTOR and DBG_DTOR.

Valgrind is capable of detecting such bugs. No need for extra macros.

Change-Id: I9cb8af9dad93a7ee7114489b13e3994515357a10
Reviewed-on: https://gerrit.libreoffice.org/7533
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>