Update the nextVisit schema

The field "instrument" was added to the schema of summit nextVist
messages. Therefore the fan-out service no longer needs to add the
"instrument" field to the fanned-out messages.

src/main.py

@@ -25,6 +25,7 @@ class NextVisitModel:
     "Next Visit Message"
     salIndex: int
     scriptSalIndex: int
+    instrument: str,
     groupId: str
     coordinateSystem: int
     position: typing.List[int]
@@ -40,16 +41,13 @@ class NextVisitModel:
 
     def add_detectors(
         self,
-        instrument: str,
         message: dict,
         active_detectors: list,
     ) -> list[dict[str, str]]:
         """Adds and duplicates next visit messages for fanout.
 
         Parameters
         ----------
-        instrument: `str`
-            The instrument to load detectors for.
         message: `str`
             The next visit message.
         active_detectors: `list`
@@ -62,7 +60,6 @@ def add_detectors(
         message_list: list[dict[str, str]] = []
         for active_detector in active_detectors:
             temp_message = message.copy()
-            temp_message["instrument"] = instrument
             temp_message["detector"] = active_detector
             # temporary change to modify short filter names to format expected by butler
             if temp_message["filters"] != "" and len(temp_message["filters"]) == 1:
@@ -371,7 +368,7 @@ async def main() -> None:
                             in_process_requests_gauge = hsc_in_process_requests_gauge
                         case _:
                             raise Exception(
-                                f"no matching case for salIndex {next_visit_message_updated.salIndex} to add instrument value"
+                                f"no matching case for salIndex {next_visit_message_updated.salIndex} to know the instrument"
                             )
 
                     try: