Remove unused code from update_docs.py

scripts/update_docs.py

@@ -6,7 +6,6 @@ Usage:
 """
 
 import json
-import os
 from pathlib import Path
 
 
@@ -56,7 +55,6 @@ def generate_deck_table(decks: list[dict]) -> str:
     if not decks:
         return "*No decks defined yet.*"
     lines = ["| Deck | Colors | Commander | Archetype |", "|------|--------|-----------|-----------|"]
-    color_map = {"W": "White", "U": "Blue", "B": "Black", "R": "Red", "G": "Green"}
     for deck in decks:
         name = deck.get("name", deck.get("filename", "Unknown"))
         colors = deck.get("colors", [])