remove unused files

Author: jackaraz

src/spey/base/__init__.py

@@ -1,12 +1,10 @@
 from .backend_base import BackendBase, ConverterBase
 from .hypotest_base import HypothesisTestingBase
 from .model_config import ModelConfig
-from .recorder import Recorder
 
 __all__ = [
     "BackendBase",
     "HypothesisTestingBase",
     "ModelConfig",
-    "Recorder",
     "ConverterBase",
 ]