Move out sequential and replace save_dygraph and load_dygraph

python/paddle/fluid/__init__.py

@@ -103,7 +103,6 @@
 from .dygraph.layers import *
 from .dygraph.base import enable_dygraph, disable_dygraph
 from .io import save, load, load_program_state, set_program_state
-from .dygraph.checkpoint import save_dygraph, load_dygraph
 from .dygraph.varbase_patch_methods import monkey_patch_varbase
 from . import generator
 from .core import _cuda_synchronize

python/paddle/fluid/dygraph/__init__.py

@@ -18,9 +18,6 @@
 from . import layers
 from .layers import *
 
-from . import container
-from .container import *
-
 from . import nn
 from .nn import *
 
@@ -30,8 +27,6 @@
 from . import parallel
 from .parallel import *
 
-from . import checkpoint
-from .checkpoint import *
 
 from . import learning_rate_scheduler
 from .learning_rate_scheduler import *
@@ -44,9 +39,7 @@
 __all__ = []
 __all__ += layers.__all__
 __all__ += base.__all__
-__all__ += container.__all__
 __all__ += nn.__all__
 __all__ += parallel.__all__
-__all__ += checkpoint.__all__
 __all__ += learning_rate_scheduler.__all__
 __all__ += amp.__all__