[API Clean]Clean __all__ to avoid exposing usless API

Author: Aurelius84

python/paddle/jit/__init__.py

@@ -15,7 +15,6 @@
 
 from .api import save
 from .api import load
-from .api import TracedLayer
 from .api import set_code_level
 from .api import set_verbosity
 from .api import declarative as to_static
@@ -34,5 +33,4 @@
  'set_code_level',
  'set_verbosity',
  'not_to_static',
- 'TracedLayer',
 ]

python/paddle/jit/api.py

@@ -74,9 +74,7 @@
 from paddle.fluid.wrapped_decorator import wrap_decorator
 
 __all__ = [
- 'TracedLayer',
  'declarative',
- 'dygraph_to_static_func',
  'set_code_level',
  'set_verbosity',
  'save',

python/paddle/jit/dy2static/__init__.py

@@ -36,6 +36,6 @@
 from .assert_transformer import AssertTransformer
 from .ast_transformer import DygraphToStaticAst
 from .program_translator import convert_to_static
-from .static_analysis import * # noqa: F403
+from .static_analysis import AstNodeWrapper, NodeVarType, StaticAnalysisVisito
 
 __all__ = []

python/paddle/jit/dy2static/assert_transformer.py

@@ -22,7 +22,7 @@
  BaseTransformer,
 )
 
-__all__ = ['AssertTransformer']
+__all__ = []
 
 
 class AssertTransformer(BaseTransformer):

python/paddle/jit/dy2static/ast_transformer.py

@@ -71,7 +71,7 @@
 from . import logging_utils
 from .utils import ast_to_source_code
 
-__all__ = ['DygraphToStaticAst']
+__all__ = []
 
 
 def apply_optimization(transformers):

python/paddle/jit/dy2static/base_transformer.py

@@ -27,6 +27,8 @@
  get_attribute_full_name,
 )
 
+__all__ = []
+
 
 class BaseTransformer(gast.NodeTransformer):
  def visit(self, node):

python/paddle/jit/dy2static/basic_api_transformer.py

@@ -23,6 +23,8 @@
  BaseTransformer,
 )
 
+__all__ = []
+
 
 class BasicApiTransformer(BaseTransformer):
  """

python/paddle/jit/dy2static/break_continue_transformer.py

@@ -27,7 +27,7 @@
  ForNodeVisitor,
 )
 
-__all__ = ['BreakContinueTransformer']
+__all__ = []
 
 BREAK_NAME_PREFIX = '__break'
 CONTINUE_NAME_PREFIX = '__continue'

python/paddle/jit/dy2static/call_transformer.py

@@ -25,6 +25,8 @@
 
 PDB_SET = "pdb.set_trace"
 
+__all__ = []
+
 
 class CallTransformer(BaseTransformer):
  """

python/paddle/jit/dy2static/cast_transformer.py

@@ -22,6 +22,8 @@
  BaseTransformer,
 )
 
+__all__ = []
+
 
 class CastTransformer(BaseTransformer):
  """