Graphs1090 question: editing graphs on page?

Just installed SDR radio and FlightAware stuff on RPi using some of the docs here, thank you for all the docs!
Then I came across graphs1090, wow, what a brilliant use and implementation of rrdtool, wiedehopf, THANKS!

I also installed it on another RPi where there is no ADS-B hardware/software, how can I remove ADS-B graphs, just have RPi graphs?thanks,