Remove one more deferred import (aws#46)

Author: laurenyu

src/sagemaker/session.py

@@ -23,7 +23,6 @@
 import botocore.config
 import six
 import yaml
-import botocore.config
 from botocore.exceptions import ClientError
 
 from sagemaker.user_agent import prepend_user_agent

src/sagemaker/tuner.py

@@ -16,7 +16,7 @@
 import inspect
 import json
 
-from sagemaker.amazon.amazon_estimator import RecordSet
+from sagemaker.amazon.amazon_estimator import AmazonAlgorithmEstimatorBase, RecordSet
 from sagemaker.amazon.hyperparameter import Hyperparameter as hp  # noqa
 from sagemaker.analytics import HyperparameterTuningJobAnalytics
 from sagemaker.estimator import Framework
@@ -114,8 +114,6 @@ def prepare_for_training(self):
 
         # For attach() to know what estimator to use for non-1P algorithms
         # (1P algorithms don't accept extra hyperparameters)
-        from sagemaker.amazon.amazon_estimator import AmazonAlgorithmEstimatorBase
-
         if not isinstance(self.estimator, AmazonAlgorithmEstimatorBase):
             self.static_hyperparameters[self.SAGEMAKER_ESTIMATOR_CLASS_NAME] = json.dumps(self.estimator.__class__.__name__)
             self.static_hyperparameters[self.SAGEMAKER_ESTIMATOR_MODULE] = json.dumps(self.estimator.__module__)