Remove mock.py (old debug file with wrong [END] format)

mock.py

@@ -1,27 +0,0 @@
-import sys
-sys.path.append('.')
-from inference import parse_action, MAX_STEPS
-import functools
-
-# Mock the print function so we can capture exactly what the user wants to see
-def run_mock():
-    task_id = "sec_easy"
-    episode_id = "ep-abc12345"
-    step_num = 1
-    display_action = "identify_vulnerability"
-    reward = 0.5
-    done = False
-    
-    print(f'[START] task_id={task_id} episode_id={episode_id}')
-    print(f'[STEP] task_id={task_id} step={step_num} action={display_action} reward={reward:.4f} done={done}')
-    
-    step_num = 2
-    display_action = "propose_fix"
-    reward = 1.0
-    done = True
-    print(f'[STEP] task_id={task_id} step={step_num} action={display_action} reward={reward:.4f} done={done}')
-    
-    total_reward = 1.5
-    print(f'[END] task_id={task_id} episode_id={episode_id} total_reward={total_reward:.4f} steps={step_num}')
-
-run_mock()