Error with kodi six

[notoco]

Context

Please provide any relevant information about your setup

• Add-on Version: 2.0.1 - from official kodi repo
• Kodi Version: 20.3-Nexus_nightly
• Kodi GUI Language: PL
• Operating System: Coreelec
• Operating System Language: PL

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Expected Behavior

Please describe the behavior you are expecting. Error when start kodi or composite - in logs:

error <general>: EXCEPTION Thrown (PythonToCppException) : -->Python callback/script returned the following error<--
                                                    - NOTE: IGNORING THIS CAN LEAD TO MEMORY LEAKS!
                                                   Error Type: <class 'ModuleNotFoundError'>
                                                   Error Contents: No module named 'kodi_six'
                                                   Traceback (most recent call last):
                                                     File "/storage/.kodi/addons/plugin.video.composite_for_plex/resources/lib/service_entry_point.py", line 12, in <module>
                                                       from composite_addon import service  # pylint: disable=import-error
                                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                                                     File "/storage/.kodi/addons/plugin.video.composite_for_plex/resources/lib/composite_addon/service.py", line 16, in <module>
                                                       from .addon.player import CallbackPlayer
                                                     File "/storage/.kodi/addons/plugin.video.composite_for_plex/resources/lib/composite_addon/addon/player.py", line 18, in <module>
                                                       from .dialogs.skip_intro import SkipIntroDialog
                                                     File "/storage/.kodi/addons/plugin.video.composite_for_plex/resources/lib/composite_addon/addon/dialogs/skip_intro.py", line 12, in <module>
                                                       from kodi_six.xbmc import Player  # pylint: disable=import-error
                                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                                                   ModuleNotFoundError: No module named 'kodi_six'
                                                   -->End of Python script error report<--```



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### Current Behavior

What is the current behavior?

No error?

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### Steps to Reproduce

Please provide detailed steps for reproducing the issue.

1. Run Kodi
2. Run composite
3. 



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### Log

Please include a complete [debug log](https://kodi.wiki/view/Log_file).



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### Additional Information

Please provide any additional information that may be helpful.



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[Remlez]

With version 2.0.0 kodi-six was removed from thte whole project. But in skip_intro.py are remains of this library. @anxdpanic Please change