update TODO

- we understand the discrepancy between gstlal's estimate of the BNS
  horizon distance and ihope's:  ihope's spectrum estimate is ratty,
  aparently leading to a 10% bias in its integral

TODO

@@ -24,7 +24,6 @@ Streaming with gstreamer
 Immediate development tasks in no particular order
 ==================================================
 
-* understand range discrepancy
 * add to the gstlal summary page
   * population statement plot
   * plots showing likelihood distributions and background pdfs, etc.