Remove useless imports, as reported by PyChecker.
diff --git a/Lib/codeop.py b/Lib/codeop.py
index 3865ec6..3335f09 100644
--- a/Lib/codeop.py
+++ b/Lib/codeop.py
@@ -1,8 +1,5 @@
 """Utility to compile possibly incomplete Python source code."""
 
-import sys
-import traceback
-
 __all__ = ["compile_command"]
 
 def compile_command(source, filename="<input>", symbol="single"):