Remove list_files tool

nanocode.py

@@ -1,6 +1,7 @@
 import os
 from modaic import PrecompiledProgram, PrecompiledConfig
 import dspy
+import weave
 import subprocess
 from dspy.utils.callback import BaseCallback
 
@@ -260,8 +261,6 @@ class RLMCodingProgram(PrecompiledProgram):
         super().__init__(config, **kwargs)
 
         if config.track_trace:
-            import weave
-
             project = kwargs.get("project", os.getenv("WANDB_PROJECT"))
             if project is None:
                 raise ValueError("project is required when track_trace is True")