Added reset of calibration plots (#2390)

Author: IsakovAD

Modules/ITS/src/ITSFeeTask.cxx

@@ -782,6 +782,12 @@ void ITSFeeTask::reset()
   mProcessingTime->Reset();
   mProcessingTime2->Reset();
   ILOG(Debug, Devel) << "Reset" << ENDM;
+
+  if (mDecodeCDW) {
+    mCalibrationWordCount->Reset();
+    mCalibLoop->Reset();
+    mCalibStage->Reset();
+  }
 }
 
 } // namespace o2::quality_control_modules::its