Remove unused imports. (#4160)

official/mnist/mnist.py

@@ -17,9 +17,6 @@ from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
 
-import argparse
-import sys
-
 from absl import app as absl_app
 from absl import flags
 import tensorflow as tf  # pylint: disable=g-bad-import-order

official/mnist/mnist_eager.py

@@ -27,7 +27,6 @@ from __future__ import division
 from __future__ import print_function
 
 import os
-import sys
 import time
 
 # pylint: disable=g-bad-import-order

official/resnet/cifar10_main.py

@@ -19,7 +19,6 @@ from __future__ import division
 from __future__ import print_function
 
 import os
-import sys
 
 from absl import app as absl_app
 from absl import flags

official/resnet/imagenet_main.py

@@ -19,7 +19,6 @@ from __future__ import division
 from __future__ import print_function
 
 import os
-import sys
 
 from absl import app as absl_app
 from absl import flags

official/resnet/resnet_run_loop.py

@@ -23,7 +23,6 @@ from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
 
-import argparse
 import os
 
 from absl import flags

official/wide_deep/wide_deep.py

@@ -17,10 +17,8 @@ from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
 
-import argparse
 import os
 import shutil
-import sys
 
 from absl import app as absl_app
 from absl import flags