[TD-581] remove unneccesary print, only keep error print

src/connector/python/linux/python3/taos/cinterface.py

@@ -223,8 +223,8 @@ class CTaosInterface(object):
         if connection.value == None:
             print('connect to TDengine failed')
             # sys.exit(1)
-        else:
-            print('connect to TDengine success')
+        #else:
+        #    print('connect to TDengine success')
 
         return connection
 
@@ -233,7 +233,7 @@ class CTaosInterface(object):
         '''Close the TDengine handle
         '''
         CTaosInterface.libtaos.taos_close(connection)
-        print('connection is closed')
+        #print('connection is closed')
 
     @staticmethod
     def query(connection, sql):