main: remove terminal line cleaning, that is now taken care by the logging module

Signed-off-by: Mattia Rizzolo <mattia@debian.org>

diffoscope/main.py

@@ -459,8 +459,6 @@ def main(args=None):
             post_parse(parsed_args)
             sys.exit(run_diffoscope(parsed_args))
     except KeyboardInterrupt:
-        if log_handler:
-            log_handler.progressbar.bar.erase_line()
         logger.info('Keyboard Interrupt')
         sys.exit(2)
     except BrokenPipeError: