cardiff: Removing confusing message
cardiff: Removing confusing message

When no disk performance information was part of the results we had the
following message printed on the output :
 No mode found in this benchmark, exiting

This could have been read as an error while it isn't.

So let's remove this confusing message.

lebauce/edeploy,redhat-cip/edeploy,redhat-cip/edeploy,lebauce/edeploy,redhat-cip/edeploy,enovance/edeploy,lebauce/edeploy,redhat-cip/edeploy,lebauce/edeploy,enovance/edeploy,enovance/edeploy,enovance/edeploy