Remove the last traces of M17 packet mode and fix a buffer overrun bug.

M17RX.h

@@ -28,8 +28,7 @@
 enum M17RX_STATE {
   M17RXS_NONE,
   M17RXS_LINK_SETUP,
-  M17RXS_STREAM,
-  M17RXS_PACKET
+  M17RXS_STREAM
 };
 
 class CM17RX {
@@ -70,7 +69,6 @@ private:
   void samplesToBits(uint16_t start, uint16_t count, uint8_t* buffer, uint16_t offset, q15_t centre, q15_t threshold);
   void writeRSSILinkSetup(uint8_t* data);
   void writeRSSIStream(uint8_t* data);
-  void writeRSSIPacket(uint8_t* data);
 };
 
 #endif