remove dead code for AdelaiDet configs

Summary: code was kept for short term to support loading old training jobs during the period when the default config is polluted; now it should be safe to remove this BC support and dead code

Differential Revision: D32218217

fbshipit-source-id: 3772477653151ccbcb4ae7098b9414853b581ad1

d2go/runner/default_runner.py

@@ -169,14 +169,6 @@ class BaseRunner(object):
             cfg
         )  # upgrade from D2's CfgNode to D2Go's CfgNode
 
-        try:
-            from d2go.runner import get_unintentional_added_configs_during_runner_import
-
-            for key in get_unintentional_added_configs_during_runner_import():
-                cfg.register_deprecated_key(key)
-        except ImportError:
-            pass
-
         cfg.SOLVER.AUTO_SCALING_METHODS = ["default_scale_d2_configs"]
         return cfg