Subject: Modified few lines in rpc_reports.py to match getLedger result.

Description:
1. As we have removed an empty row from getLedger result,
   need to make the respective changes in below lines(line no. 1839 and 2171),

   - del ledgerResult[len(ledgerResult)-1] # empty row (removed this line) and

   - TotalDrCrRow = ledgerResult[len(ledgerResult)-4]
   + TotalDrCrRow = ledgerResult[len(ledgerResult)-3]