Remove internal dependencies from OSS.

PiperOrigin-RevId: 422883948

Author: yuanliangzhe

official/projects/movinet/train.py

@@ -46,8 +46,6 @@
 # Import movinet libraries to register the backbone and model into tf.vision
 # model garden factory.
 # pylint: disable=unused-import
-from official.projects.movinet.google.configs import movinet_google
-from official.projects.movinet.google.modeling import movinet_model_google
 from official.projects.movinet.modeling import movinet
 from official.projects.movinet.modeling import movinet_model
 # pylint: enable=unused-import