Remove print statements.

Author: nadiaya

test-toolkit/resources/mnist/model_cpu/call_model_fn_once.py

@@ -14,28 +14,8 @@
 
 import os
 
-print("HEY")
-print("HEY")
-print("HEY")
-print("HEY")
-print("HEY")
-print("HEY")
-print("HEY")
-print("HEY")
-print("HEY")
-print("HEY")
-print("HEY")
-print("HEY")
-print("HEY")
-print("HEY")
-print("HEY")
-print("HEY")
-print("HEY")
 
 def model_fn(model_dir):
-    print("HEY")
-    print("HEY")
-
     lock_file = os.path.join(model_dir, 'model_fn.lock.{}'.format(os.getpid()))
     if os.path.exists(lock_file):
         raise RuntimeError('model_fn called more than once (lock: {})'.format(lock_file))