discard export PYTHONPATH manually

tools/eval.py

@@ -16,7 +16,6 @@ from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
 
-import os
 import os
 import sys
 __dir__ = os.path.dirname(__file__)

tools/infer/predict_rec.py

@@ -17,7 +17,7 @@ __dir__ = os.path.dirname(__file__)
 sys.path.append(__dir__)
 sys.path.append(os.path.join(__dir__, '../..'))
 
-import utility
+import tools.infer.utility as utility
 from ppocr.utils.utility import initial_logger
 logger = initial_logger()
 from ppocr.utils.utility import get_image_file_list