Clean up Module 20: Remove unused time and matplotlib imports

modules/19_benchmarking/benchmarking_dev.py

@@ -156,10 +156,8 @@ import tracemalloc
 from typing import Dict, List, Tuple, Any, Optional, Callable, Union
 from dataclasses import dataclass, field
 from pathlib import Path
-import json
 import platform
 from contextlib import contextmanager
-import warnings
 
 # Optional dependency for visualization only
 try:

modules/20_capstone/capstone_dev.py

@@ -192,11 +192,9 @@ This capstone demonstrates the complete workflow of professional ML competitions
 
 # %% nbgrader={"grade": false, "grade_id": "imports", "solution": true}
 import numpy as np
-import time
 import json
 from pathlib import Path
 from typing import Dict, List, Tuple, Optional, Any
-import matplotlib.pyplot as plt
 
 # Import competition and benchmarking modules
 ### BEGIN SOLUTION