chore: remove deprecated monitoring and social media subsystems

[helloissariel]

Summary

• Clean up mentor-flagged deprecated monitoring/social channel code, remove broken modules with missing dependencies, and reduce maintenance burden and dependency complexity.

Changes

• Remove the entire spoon_ai/monitoring/ directory (legacy monitoring subsystem).
• Remove the entire spoon_ai/social_media/ directory (Telegram/Discord/Twitter/Email implementations only used by monitoring).
• Delete orphaned files:
  spoon_ai/tools/toolkit_integration.py, spoon_ai/tools/crypto_tools.py, spoon_ai/tools/mcp_tools_collection.py.
• Clean up potential stale imports in spoon_ai/__init__.py.

Impact Analysis

• The monitoring subsystem is not referenced by core code paths in this repo and effectively behaves as an isolated module, so removing it does not affect core chat/agent/LLM functionality.
• Removing unused or undeclared dependencies (e.g., requests_oauthlib, discord, etc.) helps avoid dependency conflicts and simplifies the install surface.

Verification

• Ran:

  python -c "import spoon_ai"

  Core package imports successfully.