Refactor workflow_management.py and remove unused imports and code

[srijanpatel]

This pull request includes significant changes to the backend/app/nodes/llm directory, primarily involving the removal of several node classes and their associated configurations. Additionally, there are minor updates to the backend/app/api/workflow_management.py file.

Node Removals:

• backend/app/nodes/llm/mcts.py: Removed the MCTSNode class and all associated classes and methods, including DialogueState, MCTSTreeNode, and MCTSNodeConfig.
• backend/app/nodes/llm/mixture_of_agents.py: Removed the MixtureOfAgentsNode class and its associated configuration and methods.
• backend/app/nodes/llm/sample_llm.py: Removed the SampleLLMNode class and its associated configuration and methods.
• backend/app/nodes/llm/self_consistency.py: Removed the SelfConsistencyNode class and its associated configuration and methods.
• backend/app/nodes/llm/string_output_llm.py: Removed the StringOutputLLMNode class and its associated configuration and methods.

Minor Updates:

• backend/app/api/workflow_management.py: Removed the import of DynamicSchemaNodeConfig.
• backend/app/api/workflow_management.py: Added a trailing comma in the HTTPException detail string in the delete_workflow function.
• backend/app/api/workflow_management.py: Added type annotation Dict[str, str] for output_schema in the get_workflow_output_variables function.

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Important

Refactor by removing unused node classes and configurations, and update workflow_management.py for cleaner imports and improved code style.

• Node Removals:
  • Removed MCTSNode, MixtureOfAgentsNode, SampleLLMNode, SelfConsistencyNode, StringOutputLLMNode, StructuredOutputNode, TopKNode, and TreeOfThoughtsNode classes and their configurations.
• workflow_management.py Updates:
  • Removed unused import DynamicSchemaNodeConfig.
  • Added trailing comma in HTTPException detail string in delete_workflow().
  • Added type annotation Dict[str, str] for output_schema in get_workflow_output_variables().

^{This description was created by for a7c4132. It will automatically update as commits are pushed.}

[ellipsis-dev]

👍 Looks good to me! Reviewed everything up to a7c4132 in 11 seconds

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• Looked at 1396 lines of code in 9 files
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1. backend/app/api/workflow_management.py:258

• Draft comment:
  The type annotation for output_schema is redundant since it is immediately reassigned. Consider removing it for cleaner code.
• Reason this comment was not posted:
  Confidence changes required: 50%
  The type annotation for output_schema is redundant since it is immediately reassigned. This redundancy is unnecessary and can be removed for cleaner code.

Workflow ID: wflow_24RzlBnQ6t0B4fKm

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