Delete backup files

v3_28_0/CDT-role-v3_28_0.xsd.bu

v3_28_0/CDT-schedule-v3_28_0.xsd.bu

v3_28_0/CDT-semanticDescriptor-v3_28_0.xsd.bu

v3_28_0/CDT-semanticMashupInstance-v3_28_0.xsd.bu

v3_28_0/CDT-semanticMashupJobProfile-v3_28_0.xsd.bu

v3_28_0/CDT-semanticMashupResult-v3_28_0.xsd.bu

v3_28_0/CDT-serviceSubscribedAppRule-v3_28_0.xsd.bu

v3_28_0/CDT-serviceSubscribedNode-v3_28_0.xsd.bu

v3_28_0/CDT-software-v3_28_0.xsd.bu

v3_28_0/CDT-statsCollect-v3_28_0.xsd.bu

v3_28_0/CDT-statsConfig-v3_28_0.xsd.bu

v3_28_0/CDT-subscription-v3_28_0.xsd.bu

v3_28_0/CDT-svcFwWrapper-v3_28_0.xsd.bu

v3_28_0/CDT-svcObjWrapper-v3_28_0.xsd.bu

v3_28_0/CDT-timeSeries-v3_28_0.xsd.bu

v3_28_0/CDT-timeSeriesInstance-v3_28_0.xsd.bu

v3_28_0/CDT-timeSeriesNotification-v3_28_0.xsd.bu

v3_28_0/CDT-token-v3_28_0.xsd.bu

v3_28_0/CDT-transaction-v3_28_0.xsd.bu

v3_28_0/CDT-transactionMgmt-v3_28_0.xsd.bu