Hello,
We've never tested this configuration but if Clover is not executed, unit tests can't be executed. Could you explain why you want to deactivate Clover ?
If you really want to adopt such configuration, you need to use advanced parameters [1] and the following command line :
mvn sonar:sonar -Dsonar.dynamicAnalysis=reuseReports -Dsonar.surefire.reportsPath=${yourSurfireDir}
Hope it helps
Freddy