mavlink: use send() instead of using reset flag

I think we can just directly use send() and don't need to use the
workaround of resetting the send flag to trigger one send.

Also, we don't need to override it if we don't need to check any params.

src/modules/mavlink/mavlink_stream.h

@@ -99,8 +99,7 @@ public:
 	virtual bool request_message(float param2 = 0.0, float param3 = 0.0, float param4 = 0.0,
 				     float param5 = 0.0, float param6 = 0.0, float param7 = 0.0)
 	{
-		reset_last_sent();
-		return true;
+		return send(hrt_absolute_time());
 	}
 
 	/**

src/modules/mavlink/streams/autopilot_version.h

@@ -36,11 +36,6 @@ public:
 		return MAVLINK_MSG_ID_AUTOPILOT_VERSION_LEN + MAVLINK_NUM_NON_PAYLOAD_BYTES;
 	}
 
-	bool request_message(float param2, float param3, float param4,
-			     float param5, float param6, float param7) override
-	{
-		return send(hrt_absolute_time());
-	}
 private:
 	/* do not allow top copying this class */
 	MavlinkStreamAutopilotVersion(MavlinkStreamAutopilotVersion &) = delete;

src/modules/mavlink/streams/flight_information.h

@@ -37,12 +37,6 @@ public:
 	{
 		return MAVLINK_MSG_ID_FLIGHT_INFORMATION_LEN + MAVLINK_NUM_NON_PAYLOAD_BYTES;
 	}
-
-	bool request_message(float param2, float param3, float param4,
-			     float param5, float param6, float param7) override
-	{
-		return send(hrt_absolute_time());
-	}
 private:
 	uORB::Subscription _armed_sub{ORB_ID(actuator_armed)};
 

src/modules/mavlink/streams/protocol_version.h

@@ -36,11 +36,6 @@ public:
 		return MAVLINK_MSG_ID_PROTOCOL_VERSION_LEN + MAVLINK_NUM_NON_PAYLOAD_BYTES;
 	}
 
-	bool request_message(float param2, float param3, float param4,
-			     float param5, float param6, float param7) override
-	{
-		return send(hrt_absolute_time());
-	}
 private:
 	/* do not allow top copying this class */
 	MavlinkStreamProtocolVersion(MavlinkStreamProtocolVersion &) = delete;