Turn rec.doAFP off by default

I noticed that the AFP code (for example: AFP_RawDataProviderTool ) is far from being thread-safe. It doesn't break our large-scale MT tests because most runs (including those we use for testing) don't contain any AFP data. We nevertheless run the AFP reco code, which produces empty containers in the ESD and AOD and prints per-event warnings

AFP_RawDataProvider.AFP_RawDataProviderTool        WARNING vecRobs.size() == 0
StoreGateSvc                                       WARNING retrieve(const): No valid proxy for object AFP_TDDigiCollection  of type AFP_TDDigiCollection(CLID 1154879695)
AFP_TDLocReco                                      WARNING AFP_Collection_Reading Failed

The change proposed here turns the rec.doAFP flag off by default.