fix(fitness): resolve CodeQL code quality issues

- Remove unused 'inspect' import from rp_gpu_fitness.py
- Remove unused 'call' import from test files (test_fitness.py, test_gpu_fitness.py, test_system_fitness.py)
- Add explanatory comment to empty except clause in rp_gpu_fitness.py

All 83 fitness check tests pass with these changes.

Author: deanq

runpod/serverless/modules/rp_gpu_fitness.py

@@ -9,7 +9,6 @@
 """
 
 import asyncio
-import inspect
 import os
 import subprocess
 from pathlib import Path
@@ -310,6 +309,7 @@ def auto_register_gpu_check() -> None:
     except (FileNotFoundError, subprocess.TimeoutExpired):
         has_gpu = False
     except Exception:
+        # Catch any other exceptions and assume no GPU
         has_gpu = False
 
     if has_gpu:

tests/test_serverless/test_modules/test_fitness.py

@@ -9,7 +9,7 @@
 import asyncio
 import os
 import pytest
-from unittest.mock import patch, MagicMock, call
+from unittest.mock import patch, MagicMock
 
 from runpod.serverless.modules.rp_fitness import (
     register_fitness_check,

tests/test_serverless/test_modules/test_gpu_fitness.py

@@ -10,7 +10,7 @@
 import subprocess
 import pytest
 from pathlib import Path
-from unittest.mock import patch, MagicMock, AsyncMock, call
+from unittest.mock import patch, MagicMock, AsyncMock
 
 from runpod.serverless.modules.rp_gpu_fitness import (
     _parse_gpu_test_output,

tests/test_serverless/test_modules/test_system_fitness.py

@@ -8,7 +8,7 @@
 import asyncio
 import os
 import subprocess
-from unittest.mock import patch, MagicMock, AsyncMock, call
+from unittest.mock import patch, MagicMock, AsyncMock
 
 import pytest