remove ascii encoding on results

Author: MAhmadShah

pytpcc/util/results.py

@@ -250,5 +250,5 @@ def show(self, load_time=None, driver=None, threads=1):
         if driver:
             driver.save_result(result_doc)
         print(result_doc)
-        return ret.encode('ascii', "ignore")
+        return ret
 ## CLASS