assignee tables in clean.py now moved to own function
assignee tables in clean.py now moved to own function

yngcan/patentprocessor,nikken1/patentprocessor,nikken1/patentprocessor,nikken1/patentprocessor,yngcan/patentprocessor,funginstitute/patentprocessor,funginstitute/patentprocessor,funginstitute/patentprocessor,yngcan/patentprocessor