Remove utils.get_number_of_rows()
Remove utils.get_number_of_rows()

The method get_number_of_rows() in utils is never called. Hence it is
removed. Only the QueryBuilder class method get_number_of_rows() is
called.

Change-Id: Ib4638e53a55af3c20eb23f9bdf68abd670a66445

redhat-cip/dci-control-server,enovance/dci-control-server,redhat-cip/dci-control-server,enovance/dci-control-server