mavlink: use send_message() method of Mavlink class instead of using helpers

src/modules/mavlink/mavlink_stream.cpp

@@ -43,9 +43,9 @@
 #include "mavlink_stream.h"
 #include "mavlink_main.h"
 
-MavlinkStream::MavlinkStream() :
+MavlinkStream::MavlinkStream(Mavlink *mavlink) :
 	next(nullptr),
-	_channel(MAVLINK_COMM_0),
+	_mavlink(mavlink),
 	_interval(1000000),
 	_last_sent(0)
 {
@@ -64,15 +64,6 @@ MavlinkStream::set_interval(const unsigned int interval)
 	_interval = interval;
 }
 
-/**
- * Set mavlink channel
- */
-void
-MavlinkStream::set_channel(mavlink_channel_t channel)
-{
-	_channel = channel;
-}
-
 /**
  * Update subscriptions and send message if necessary
  */