Move registry utils to core.

PiperOrigin-RevId: 330583627

official/core/exp_factory.py

@@ -15,8 +15,8 @@
 # ==============================================================================
 """Experiment factory methods."""
 
+from official.core import registry
 from official.modeling.hyperparams import config_definitions as cfg
-from official.utils import registry
 
 
 _REGISTERED_CONFIGS = {}

official/utils/registry_test.py → official/core/registry_test.py

@@ -20,7 +20,7 @@ from __future__ import division
 from __future__ import print_function
 
 import tensorflow as tf
-from official.utils import registry
+from official.core import registry
 
 
 class RegistryTest(tf.test.TestCase):

official/core/task_factory.py

@@ -15,7 +15,7 @@
 # ==============================================================================
 """A global factory to register and access all registered tasks."""
 
-from official.utils import registry
+from official.core import registry
 
 _REGISTERED_TASK_CLS = {}
 

official/nlp/data/data_loader_factory.py

@@ -15,7 +15,7 @@
 # ==============================================================================
 """A global factory to access NLP registered data loaders."""
 
-from official.utils import registry
+from official.core import registry
 
 _REGISTERED_DATA_LOADER_CLS = {}