Revert "Merge branch 'jnnkl-multi-thread-integration' into 'master'"

ee/app/assets/javascripts/ai/constants.js

ee/app/assets/javascripts/ai/graphql/chat.mutation.graphql

.../javascripts/ai/graphql/chat_with_thread.mutation.graphql

...ts/ai/graphql/delete_conversation_thread.mutation.graphql

...ipts/ai/graphql/get_ai_conversation_threads.query.graphql

...ipts/ai/graphql/get_ai_messages_with_thread.query.graphql

ee/app/assets/javascripts/ai/tanuki_bot/components/app.vue

...pts/ai/tanuki_bot/components/tanuki_bot_subscriptions.vue

...subscriptions/ai_completion_response.subscription.graphql

...ptions/ai_completion_response_stream.subscription.graphql

ee/spec/frontend/ai/tanuki_bot/components/app_spec.js

...ai/tanuki_bot/components/tanuki_bot_subscriptions_spec.js

ee/spec/frontend/ai/tanuki_bot/mock_data.js

...end/batch_comments/components/summarize_my_review_spec.js

.../merge_requests/components/summarize_code_changes_spec.js

...merge_request_widget/components/ai_commit_message_spec.js

ee/spec/frontend/vulnerabilities/mock_data.js

package.json

yarn.lock