Merge pull request #1005 from alphagov/482-remove-openai-answer-composition-integration

[CHAT-472] Remove OpenAI answer composition integration

Author: davidgisbey

app/models/question.rb

@@ -2,7 +2,7 @@ class Question < ApplicationRecord
   enum :answer_strategy,
        {
          open_ai_rag_completion: "open_ai_rag_completion", # legacy strategy - no longer used
-         openai_structured_answer: "openai_structured_answer",
+         openai_structured_answer: "openai_structured_answer", # legacy strategy - no longer used
          claude_structured_answer: "claude_structured_answer",
          non_llm_answer: "non_llm_answer", # only used during load testing, but can be present on records created during testing
        },

lib/answer_composition/composer.rb

@@ -35,16 +35,6 @@ def call
 
     def compose_answer
       case answer_strategy
-      when "openai_structured_answer"
-        PipelineRunner.call(question:, pipeline: [
-          Pipeline::JailbreakGuardrails.new(llm_provider: :openai),
-          Pipeline::QuestionRephraser.new(llm_provider: :openai),
-          Pipeline::OpenAI::QuestionRouter,
-          Pipeline::QuestionRoutingGuardrails.new(llm_provider: :openai),
-          Pipeline::SearchResultFetcher,
-          Pipeline::OpenAI::StructuredAnswerComposer,
-          Pipeline::AnswerGuardrails.new(llm_provider: :openai),
-        ])
       when "claude_structured_answer"
         PipelineRunner.call(question:, pipeline: [
           Pipeline::JailbreakGuardrails.new(llm_provider: :claude),