Minor change to Reverse Beacon Network data files

While working on a script to process the RBN data files last week, I discovered that the raw historical data maintained by the RBN itself have not been properly filtered to remove duplicated lines. I have therefore replaced the data files I use with new versions in which the duplicated lines have been removed. This is a minor change (on a recent day, there were a total of 1,194,001,674 lines in the database, 1,188,655,665 of these were unique, implying that 5,346,009 additional lines were present, for a duplication rate of about 0.5%).