Remove dwell time

gtfs-realtime/spec/en/reference.md

@@ -707,5 +707,4 @@ _If a modification affects the first stop of the trip, that stop also serves as
 | _**Field Name**_ | _**Type**_ | _**Required**_ | _**Cardinality**_ | _**Description**_ |
 |------------------|------------|----------------|-------------------|-------------------|
 | **stop_id** | [string](https://protobuf.dev/programming-guides/proto2/#scalar) | Required | One | The replacement stop ID which will now be visited by the trip. May refer to a new stop added using a GTFS-RT `Stop` message, or to an existing stop defined in the (CSV) GTFS feed’s `stops.txt`. The stop MUST have `location_type=0` (routable stops). |
-| **travel_time_to_stop** | [int32](https://protobuf.dev/programming-guides/proto2/#scalar) | Optional | One | The difference in seconds between the arrival time at this stop and the arrival time at the reference stop. The reference stop is the stop prior to `start_stop_selector`. If the modification begins at the first stop of the trip, then the first stop of the trip is the reference stop. <br/><br/>This value MUST be monotonically increasing and may only be a negative number if the first stop of the original trip is the reference stop. <br/><br/>If the value is not supplied, consumers MAY interpolate or infer the `travel_time_to_stop` based on other data. |
-| **dwell_time** | [uint32](https://protobuf.dev/programming-guides/proto2/#scalar) | Optional | One | The amount of time difference between the scheduled arrival time and departure time. If not specified, the dwell time is assumed to be 0, and the arrival time and departure time will be the same. If specified, the arrival time of the replacement stop is defined as `reference_stop.departure_time + travel_time_to_stop` and departure time is defined as `reference_stop.departure_time + travel_time_to_stop + dwell_time` |
+| **travel_time_to_stop** | [int32](https://protobuf.dev/programming-guides/proto2/#scalar) | Optional | One | The difference in seconds between the arrival time at this stop and the arrival time at the reference stop. The reference stop is the stop prior to `start_stop_selector`. If the modification begins at the first stop of the trip, then the first stop of the trip is the reference stop. <br/><br/>This value MUST be monotonically increasing and may only be a negative number if the first stop of the original trip is the reference stop. <br/><br/>If the value is not supplied, consumers MAY interpolate or infer the `travel_time_to_stop` based on other data. |