Update description of pfs.filter_block().

applications/lofar2/model/rtdsp/multirate.py

@@ -273,10 +273,6 @@ class PolyPhaseFirFilterStructure:
         input time sample.
         For downsampling the inData should contain Nphases = Ndown input time
         samples.
-        For a single channel downconverter or analysis DFT filterbank the
-        inData contains Ndown input time samples, with Ndown <= Nphases = Ndft.
-        For a single channel upconverter or synthesis DFT filterbank the
-        inData contains Ndft time samples, with Ndft >= Nphases = Nup.
 
         Input:
         . inData: block of input data with length L. The time index n in