mavlink: new args to request message, omit param1

We can omit param1 because it is already used for the message_id, so
it's basically duplicate information and won't get used anywhere.

src/modules/mavlink/streams/autopilot_version.h

@@ -36,7 +36,7 @@ public:
 		return MAVLINK_MSG_ID_AUTOPILOT_VERSION_LEN + MAVLINK_NUM_NON_PAYLOAD_BYTES;
 	}
 
-	bool request_message(float param1, float param2, float param3, float param4,
+	bool request_message(float param2, float param3, float param4,
 			     float param5, float param6, float param7) override
 	{
 		return send(hrt_absolute_time());

src/modules/mavlink/streams/flight_information.h

@@ -38,7 +38,7 @@ public:
 		return MAVLINK_MSG_ID_FLIGHT_INFORMATION_LEN + MAVLINK_NUM_NON_PAYLOAD_BYTES;
 	}
 
-	bool request_message(float param1, float param2, float param3, float param4,
+	bool request_message(float param2, float param3, float param4,
 			     float param5, float param6, float param7) override
 	{
 		return send(hrt_absolute_time());

src/modules/mavlink/streams/protocol_version.h

@@ -36,7 +36,7 @@ public:
 		return MAVLINK_MSG_ID_PROTOCOL_VERSION_LEN + MAVLINK_NUM_NON_PAYLOAD_BYTES;
 	}
 
-	bool request_message(float param1, float param2, float param3, float param4,
+	bool request_message(float param2, float param3, float param4,
 			     float param5, float param6, float param7) override
 	{
 		return send(hrt_absolute_time());

src/modules/mavlink/streams/storage_information.h

@@ -45,7 +45,7 @@ public:
 		return MAVLINK_MSG_ID_STORAGE_INFORMATION_LEN + MAVLINK_NUM_NON_PAYLOAD_BYTES;
 	}
 
-	bool request_message(float param1, float param2, float param3, float param4,
+	bool request_message(float param2, float param3, float param4,
 			     float param5, float param6, float param7) override
 	{
 		storage_id = (int)roundf(param2);