Remove sample creation control

scripts/autoload/exam_simulation_service.gd

@@ -8,7 +8,6 @@ signal state_changed
 signal request_failed(message: String)
 signal outcome_changed
 signal history_changed
-signal sample_created
 
 var api_url := DEFAULT_API_URL
 var outcome_api_url := "https://s3q.ranaze.com/api/step3-outcomes"
@@ -60,10 +59,6 @@ func load_results_preview() -> void:
 	_send("preview", HTTPClient.METHOD_GET, "/preview-results")
 
 
-func create_sample_completed() -> void:
-	_send("sample_create", HTTPClient.METHOD_POST, "/sample-completed")
-
-
 func start_next_block() -> void:
 	if simulation.is_empty():
 		return
@@ -182,9 +177,6 @@ func _on_request_completed(result: int, response_code: int, _headers: PackedStri
 		history_next_before = "" if next_before == null else str(next_before)
 		history_changed.emit()
 		return
-	if action == "sample_create":
-		sample_created.emit()
-		return
 	if action.begins_with("outcome_"):
 		outcome = parsed
 		outcome_changed.emit()