ADO driver: don't pretend to implement an interface one does not

Change-Id: I6234974cfc1b7650a35b8f7b9a4132acf797c91b
ADO driver: don't override a virtual method just to call the one of the parent

Change-Id: I39020452e8ff4b17b0c1cfb9ff54bf650ab97fc3
mozab driver: don't pretend to implement an interface one does not

Change-Id: I8ab2e2691ecf35e00283bd3144b2f4c8203adc3a