Updated Channel Rx plugins (markdown)

Channel-Rx-plugins.md

@@ -57,14 +57,6 @@ It is just the wideband version of the NFM demod plugin. It has no de-emphasis n
 
 This plugin is used to listen to broadcast FM stations with possible stereo output and RDS decoding
 
-## Channel analyzer plugin
-
-This plugin has been superceded by the Channel analyzer NG described above. 
-
 ## LoRa demod plugin
 
 This plugin can be used to visualize and decode LoRa (Long Range) modulation designed by Semtech. It comes from the original source code and decoding technique has been preserved as is. It has been reported that it works in some cases but there is no formal support for it.
-
-## TCP source plugin
-
-This serves more or less the same purpose as the UDP source plugin but is less well maintained. You should rather use the UDP plugin