removed diagnostics check

Author: JamesW1-NHS

lambdas/ack_backend/src/ack_processor.py

@@ -50,11 +50,7 @@ def lambda_handler(event, _):
                 break
 
             ack_data_rows.append(convert_message_to_ack_row(message, created_at_formatted_string))
-            # Note: we are only currently receiving failure records.
-            # Nevertheless, we leave this here pending rewrite of tests (which currently still incorporate
-            # success records and use "diagnostics" to identify failures).
-            if message.get("diagnostics"):
-                increment_records_failed_count(message_id)
+            increment_records_failed_count(message_id)
 
     update_ack_file(file_key, created_at_formatted_string, ack_data_rows)